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heimdal: Fix multiple security vulnerabilities

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The following issues are patched:

 - CVE-2022-42898 PAC parse integer overflows
 - CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour
 - CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
 - CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec

    Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0
    on the Common Vulnerability Scoring System (CVSS) v3, as we believe
    it should be possible to get an RCE on a KDC, which means that
    credentials can be compromised that can be used to impersonate
    anyone in a realm or forest of realms.

    Heimdal's ASN.1 compiler generates code that allows specially
    crafted DER encodings of CHOICEs to invoke the wrong free function
    on the decoded structure upon decode error.  This is known to impact
    the Heimdal KDC, leading to an invalid free() of an address partly
    or wholly under the control of the attacker, in turn leading to a
    potential remote code execution (RCE) vulnerability.

    This error affects the DER codec for all extensible CHOICE types
    used in Heimdal, though not all cases will be exploitable.  We have
    not completed a thorough analysis of all the Heimdal components
    affected, thus the Kerberos client, the X.509 library, and other
    parts, may be affected as well.

    This bug has been in Heimdal's ASN.1 compiler since 2005, but it may
    only affect Heimdal 1.6 and up.  It was first reported by Douglas
    Bagnall, though it had been found independently by the Heimdal
    maintainers via fuzzing a few weeks earlier.

    While no zero-day exploit is known, such an exploit will likely be
    available soon after public disclosure.

 - CVE-2019-14870: Validate client attributes in protocol-transition
 - CVE-2019-14870: Apply forwardable policy in protocol-transition
 - CVE-2019-14870: Always lookup impersonate client in DB

Sponsored by:	so (philip)
Obtained from:	so (philip)
Tested by:	philip, cy
MFC after:	immediately
This commit is contained in:
Cy Schubert 2022-11-08 00:53:29 -08:00
parent 1ffab636da
commit ed549cb0c5
53 changed files with 394 additions and 158 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
crypto/heimdal/admin/change.c
View File

@ -217,7 +217,6 @@ kt_change (struct change_options *opt, int argc, char **argv)
krb5_kt_end_seq_get(context, keytab, &cursor);
if (ret == KRB5_KT_END) {
ret = 0;
for (i = 0; i < j; i++) {
if (verbose_flag) {
char *client_name;

2
crypto/heimdal/appl/gssmask/gssmask.c
View File

@ -949,7 +949,9 @@ HandleOP(WrapExt)
memcpy(p, iov[4].buffer.value, iov[4].buffer.length);
p += iov[4].buffer.length;
memcpy(p, iov[5].buffer.value, iov[5].buffer.length);
#ifndef __clang_analyzer__
p += iov[5].buffer.length;
#endif
gss_release_iov_buffer(NULL, iov, iov_len);

4
crypto/heimdal/kadmin/kadmind.c
View File

@ -116,7 +116,11 @@ main(int argc, char **argv)
}
argc -= optidx;
#ifndef __clang_analyzer__
argv += optidx;
#endif
if (argc != 0)
usage(1);
if (config_file == NULL) {
asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));

13
crypto/heimdal/kadmin/mod.c
View File

@ -106,7 +106,7 @@ static void
add_aliases(krb5_context contextp, kadm5_principal_ent_rec *princ,
struct getarg_strings *strings)
{
krb5_error_code ret;
krb5_error_code ret = 0;
HDB_extension ext;
krb5_data buf;
krb5_principal p;
@ -127,9 +127,16 @@ add_aliases(krb5_context contextp, kadm5_principal_ent_rec *princ,
sizeof(ext.data.u.aliases.aliases.val[0]));
ext.data.u.aliases.aliases.len = strings->num_strings;
for (i = 0; i < strings->num_strings; i++) {
for (i = 0; ret == 0 && i < strings->num_strings; i++) {
ret = krb5_parse_name(contextp, strings->strings[i], &p);
ret = copy_Principal(p, &ext.data.u.aliases.aliases.val[i]);
if (ret)
krb5_err(contextp, 1, ret, "Could not parse alias %s",
strings->strings[i]);
if (ret == 0)
ret = copy_Principal(p, &ext.data.u.aliases.aliases.val[i]);
if (ret)
krb5_err(contextp, 1, ret, "Could not copy parsed alias %s",
strings->strings[i]);
krb5_free_principal(contextp, p);
}
}

5
crypto/heimdal/kadmin/stash.c
View File

@ -103,7 +103,10 @@ stash(struct stash_options *opt, int argc, char **argv)
}
}
ret = krb5_string_to_key_salt(context, enctype, buf, salt, &key);
ret = hdb_add_master_key(context, &key, &mkey);
if (ret == 0)
ret = hdb_add_master_key(context, &key, &mkey);
if (ret)
krb5_warn(context, errno, "setting master key");
krb5_free_keyblock_contents(context, &key);
}

2
crypto/heimdal/kcm/protocol.c
View File

@ -423,7 +423,7 @@ kcm_op_get_principal(krb5_context context,
free(name);
kcm_release_ccache(context, ccache);
return 0;
return ret;
}
/*

4
crypto/heimdal/kdc/digest.c
View File

@ -1467,6 +1467,10 @@ _kdc_do_digest(krb5_context context,
ret = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_DIGEST_ENCRYPT,
buf.data, buf.length, 0,
&rep.innerRep);
if (ret) {
krb5_prepend_error_message(context, ret, "Failed to encrypt digest: ");
goto out;
}
ASN1_MALLOC_ENCODE(DigestREP, reply->data, reply->length, &rep, &size, ret);
if (ret) {

3
crypto/heimdal/kdc/hpropd.c
View File

@ -107,7 +107,9 @@ main(int argc, char **argv)
}
argc -= optidx;
#ifndef __clang_analyzer__
argv += optidx;
#endif
if (argc != 0)
usage(1);
@ -125,6 +127,7 @@ main(int argc, char **argv)
krb5_ticket *ticket;
char *server;
memset(&ss, 0, sizeof(ss));
sock = STDIN_FILENO;
#ifdef SUPPORT_INETD
if (inetd_flag == -1) {

2
crypto/heimdal/kdc/kdc-replay.c
View File

@ -184,6 +184,8 @@ main(int argc, char **argv)
unsigned int tag2;
ret = der_get_tag (r.data, r.length,
&cl, &ty, &tag2, NULL);
if (ret)
krb5_err(context, 1, ret, "Could not decode replay data");
if (MAKE_TAG(cl, ty, 0) != clty)
krb5_errx(context, 1, "class|type mismatch: %d != %d",
(int)MAKE_TAG(cl, ty, 0), (int)clty);

56
crypto/heimdal/kdc/krb5tgs.c
View File

@ -1928,30 +1928,40 @@ tgs_build_reply(krb5_context context,
if (ret)
goto out;
ret = _kdc_db_fetch(context, config, tp, HDB_F_GET_CLIENT | flags,
NULL, &s4u2self_impersonated_clientdb,
&s4u2self_impersonated_client);
if (ret) {
const char *msg;
/*
* If the client belongs to the same realm as our krbtgt, it
* should exist in the local database.
*
*/
if (ret == HDB_ERR_NOENTRY)
ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN;
msg = krb5_get_error_message(context, ret);
kdc_log(context, config, 2,
"S4U2Self principal to impersonate %s not found in database: %s",
tpn, msg);
krb5_free_error_message(context, msg);
goto out;
}
free(s4u2self_impersonated_client->entry.pw_end);
s4u2self_impersonated_client->entry.pw_end = NULL;
ret = kdc_check_flags(context, config, s4u2self_impersonated_client, tpn,
NULL, NULL, FALSE);
if (ret)
goto out;
/* If we were about to put a PAC into the ticket, we better fix it to be the right PAC */
if(rspac.data) {
krb5_pac p = NULL;
krb5_data_free(&rspac);
ret = _kdc_db_fetch(context, config, tp, HDB_F_GET_CLIENT | flags,
NULL, &s4u2self_impersonated_clientdb, &s4u2self_impersonated_client);
if (ret) {
const char *msg;
/*
* If the client belongs to the same realm as our krbtgt, it
* should exist in the local database.
*
*/
if (ret == HDB_ERR_NOENTRY)
ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN;
msg = krb5_get_error_message(context, ret);
kdc_log(context, config, 1,
"S2U4Self principal to impersonate %s not found in database: %s",
tpn, msg);
krb5_free_error_message(context, msg);
goto out;
}
ret = _kdc_pac_generate(context, s4u2self_impersonated_client, &p);
if (ret) {
kdc_log(context, config, 0, "PAC generation failed for -- %s",
@ -1987,10 +1997,12 @@ tgs_build_reply(krb5_context context,
/*
* If the service isn't trusted for authentication to
* delegation, remove the forward flag.
* delegation or if the impersonate client is disallowed
* forwardable, remove the forwardable flag.
*/
if (client->entry.flags.trusted_for_delegation) {
if (client->entry.flags.trusted_for_delegation &&
s4u2self_impersonated_client->entry.flags.forwardable) {
str = "[forwardable]";
} else {
b->kdc_options.forwardable = 0;

2
crypto/heimdal/kdc/kstash.c
View File

@ -126,6 +126,8 @@ main(int argc, char **argv)
krb5_string_to_key_salt(context, enctype, buf, salt, &key);
}
ret = hdb_add_master_key(context, &key, &mkey);
if (ret)
krb5_err(context, 1, ret, "hdb_add_master_key");
krb5_free_keyblock_contents(context, &key);

1
crypto/heimdal/kdc/pkinit.c
View File

@ -249,7 +249,6 @@ generate_dh_keyblock(krb5_context context,
memset(dh_gen_key, 0, size);
}
ret = 0;
#ifdef HAVE_OPENSSL
} else if (client_params->keyex == USE_ECDH) {

2
crypto/heimdal/kuser/kdestroy.c
View File

@ -90,7 +90,9 @@ main (int argc, char **argv)
}
argc -= optidx;
#ifndef __clang_analyzer__
argv += optidx;
#endif
if (argc != 0)
usage (1);

5
crypto/heimdal/kuser/kswitch.c
View File

@ -86,14 +86,15 @@ kswitch(struct kswitch_options *opt, int argc, char **argv)
krb5_err(kcc_context, 1, ret, "krb5_cc_cache_get_first");
while (krb5_cc_cache_next(kcc_context, cursor, &id) == 0) {
krb5_principal p;
krb5_principal p = NULL;
char num[10];
ret = krb5_cc_get_principal(kcc_context, id, &p);
if (ret == 0)
ret = krb5_unparse_name(kcc_context, p, &name);
if (ret)
continue;
ret = krb5_unparse_name(kcc_context, p, &name);
krb5_free_principal(kcc_context, p);
snprintf(num, sizeof(num), "%d", (int)(len + 1));

8
crypto/heimdal/lib/asn1/der_copy.c
View File

@ -135,8 +135,12 @@ int
der_copy_octet_string (const heim_octet_string *from, heim_octet_string *to)
{
to->length = from->length;
to->data = malloc(to->length);
if(to->length != 0 && to->data == NULL)
if (from->data == NULL) {
to->data = NULL;
return 0;
}
to->data = malloc(to->length);
if (to->length != 0 && to->data == NULL)
return ENOMEM;
memcpy(to->data, from->data, to->length);
return 0;

12
crypto/heimdal/lib/asn1/gen_decode.c
View File

@ -584,14 +584,14 @@ decode_type (const char *name, const Type *t, int optional,
classname(cl),
ty ? "CONS" : "PRIM",
valuename(cl, tag));
fprintf(codefile,
"(%s)->element = %s;\n",
name, m->label);
if (asprintf (&s, "%s(%s)->u.%s", m->optional ? "" : "&",
name, m->gen_name) < 0 || s == NULL)
errx(1, "malloc");
decode_type (s, m->type, m->optional, forwstr, m->gen_name, NULL,
depth + 1);
fprintf(codefile,
"(%s)->element = %s;\n",
name, m->label);
free(s);
fprintf(codefile,
"}\n");
@ -600,23 +600,23 @@ decode_type (const char *name, const Type *t, int optional,
if (have_ellipsis) {
fprintf(codefile,
"else {\n"
"(%s)->element = %s;\n"
"(%s)->u.%s.data = calloc(1, len);\n"
"if ((%s)->u.%s.data == NULL) {\n"
"e = ENOMEM; %s;\n"
"}\n"
"(%s)->u.%s.length = len;\n"
"memcpy((%s)->u.%s.data, p, len);\n"
"(%s)->element = %s;\n"
"p += len;\n"
"ret += len;\n"
"len = 0;\n"
"}\n",
name, have_ellipsis->label,
name, have_ellipsis->gen_name,
name, have_ellipsis->gen_name,
forwstr,
name, have_ellipsis->gen_name,
name, have_ellipsis->gen_name,
name, have_ellipsis->label);
name, have_ellipsis->gen_name);
} else {
fprintf(codefile,
"else {\n"

7
crypto/heimdal/lib/asn1/gen_free.c
View File

@ -61,6 +61,13 @@ free_type (const char *name, const Type *t, int preserve)
case TNull:
case TGeneralizedTime:
case TUTCTime:
/*
* This doesn't do much, but it leaves zeros where garbage might
* otherwise have been found. Gets us closer to having the equivalent
* of a memset()-to-zero data structure after calling the free
* functions.
*/
fprintf(codefile, "*%s = 0;\n", name);
break;
case TBitString:
if (ASN1_TAILQ_EMPTY(t->members))

1
crypto/heimdal/lib/gssapi/krb5/accept_sec_context.c
View File

@ -425,6 +425,7 @@ gsskrb5_acceptor_start(OM_uint32 * minor_status,
* lets only send the error token on clock skew, that
* limit when send error token for non-MUTUAL.
*/
free_Authenticator(ctx->auth_context->authenticator);
return send_error_token(minor_status, context, kret,
server, &indata, output_token);
} else if (kret) {

12
crypto/heimdal/lib/gssapi/krb5/arcfour.c
View File

@ -307,7 +307,7 @@ _gssapi_verify_mic_arcfour(OM_uint32 * minor_status,
return GSS_S_FAILURE;
}
cmp = ct_memcmp(cksum_data, p + 8, 8);
cmp = (ct_memcmp(cksum_data, p + 8, 8) == 0);
if (cmp) {
*minor_status = 0;
return GSS_S_BAD_MIC;
@ -331,9 +331,9 @@ _gssapi_verify_mic_arcfour(OM_uint32 * minor_status,
_gsskrb5_decode_be_om_uint32(SND_SEQ, &seq_number);
if (context_handle->more_flags & LOCAL)
cmp = memcmp(&SND_SEQ[4], "\xff\xff\xff\xff", 4);
cmp = (ct_memcmp(&SND_SEQ[4], "\xff\xff\xff\xff", 4) != 0);
else
cmp = memcmp(&SND_SEQ[4], "\x00\x00\x00\x00", 4);
cmp = (ct_memcmp(&SND_SEQ[4], "\x00\x00\x00\x00", 4) != 0);
memset(SND_SEQ, 0, sizeof(SND_SEQ));
if (cmp != 0) {
@ -616,9 +616,9 @@ OM_uint32 _gssapi_unwrap_arcfour(OM_uint32 *minor_status,
_gsskrb5_decode_be_om_uint32(SND_SEQ, &seq_number);
if (context_handle->more_flags & LOCAL)
cmp = memcmp(&SND_SEQ[4], "\xff\xff\xff\xff", 4);
cmp = (ct_memcmp(&SND_SEQ[4], "\xff\xff\xff\xff", 4) != 0);
else
cmp = memcmp(&SND_SEQ[4], "\x00\x00\x00\x00", 4);
cmp = (ct_memcmp(&SND_SEQ[4], "\x00\x00\x00\x00", 4) != 0);
if (cmp != 0) {
*minor_status = 0;
@ -695,7 +695,7 @@ OM_uint32 _gssapi_unwrap_arcfour(OM_uint32 *minor_status,
return GSS_S_FAILURE;
}
cmp = ct_memcmp(cksum_data, p0 + 16, 8); /* SGN_CKSUM */
cmp = (ct_memcmp(cksum_data, p0 + 16, 8) == 0); /* SGN_CKSUM */
if (cmp) {
_gsskrb5_release_buffer(minor_status, output_message_buffer);
*minor_status = 0;

12
crypto/heimdal/lib/gssapi/krb5/decapsulate.c
View File

@ -54,6 +54,8 @@ _gsskrb5_get_mech (const u_char *ptr,
e = der_get_length (p, total_len - 1, &len, &len_len);
if (e || 1 + len_len + len != total_len)
return -1;
if (total_len < 1 + len_len + 1)
return -1;
p += len_len;
if (*p++ != 0x06)
return -1;
@ -80,6 +82,10 @@ _gssapi_verify_mech_header(u_char **str,
if (mech_len != mech->length)
return GSS_S_BAD_MECH;
if (mech_len > total_len)
return GSS_S_BAD_MECH;
if (p - *str > total_len - mech_len)
return GSS_S_BAD_MECH;
if (ct_memcmp(p,
mech->elements,
mech->length) != 0)
@ -190,13 +196,13 @@ _gssapi_verify_pad(gss_buffer_t wrapped_token,
size_t padlength;
int i;
pad = (u_char *)wrapped_token->value + wrapped_token->length - 1;
padlength = *pad;
pad = (u_char *)wrapped_token->value + wrapped_token->length;
padlength = pad[-1];
if (padlength > datalen)
return GSS_S_BAD_MECH;
for (i = padlength; i > 0 && *pad == padlength; i--, pad--)
for (i = padlength; i > 0 && *--pad == padlength; i--)
;
if (i != 0)
return GSS_S_BAD_MIC;

34
crypto/heimdal/lib/gssapi/krb5/unwrap.c
View File

@ -64,6 +64,8 @@ unwrap_des
if (IS_DCE_STYLE(context_handle)) {
token_len = 22 + 8 + 15; /* 45 */
if (input_message_buffer->length < token_len)
return GSS_S_BAD_MECH;
} else {
token_len = input_message_buffer->length;
}
@ -76,6 +78,11 @@ unwrap_des
if (ret)
return ret;
len = (p - (u_char *)input_message_buffer->value)
+ 22 + 8;
if (input_message_buffer->length < len)
return GSS_S_BAD_MECH;
if (memcmp (p, "\x00\x00", 2) != 0)
return GSS_S_BAD_SIG;
p += 2;
@ -122,7 +129,7 @@ unwrap_des
} else {
/* check pad */
ret = _gssapi_verify_pad(input_message_buffer,
input_message_buffer->length - len,
input_message_buffer->length - len - 8,
&padlength);
if (ret)
return ret;
@ -195,9 +202,10 @@ unwrap_des
output_message_buffer->value = malloc(output_message_buffer->length);
if(output_message_buffer->length != 0 && output_message_buffer->value == NULL)
return GSS_S_FAILURE;
memcpy (output_message_buffer->value,
p + 24,
output_message_buffer->length);
if (output_message_buffer->value != NULL)
memcpy (output_message_buffer->value,
p + 24,
output_message_buffer->length);
return GSS_S_COMPLETE;
}
#endif
@ -230,6 +238,8 @@ unwrap_des3
if (IS_DCE_STYLE(context_handle)) {
token_len = 34 + 8 + 15; /* 57 */
if (input_message_buffer->length < token_len)
return GSS_S_BAD_MECH;
} else {
token_len = input_message_buffer->length;
}
@ -242,7 +252,12 @@ unwrap_des3
if (ret)
return ret;
if (memcmp (p, "\x04\x00", 2) != 0) /* HMAC SHA1 DES3_KD */
len = (p - (u_char *)input_message_buffer->value)
+ 34 + 8;
if (input_message_buffer->length < len)
return GSS_S_BAD_MECH;
if (ct_memcmp (p, "\x04\x00", 2) != 0) /* HMAC SHA1 DES3_KD */
return GSS_S_BAD_SIG;
p += 2;
if (ct_memcmp (p, "\x02\x00", 2) == 0) {
@ -289,7 +304,7 @@ unwrap_des3
} else {
/* check pad */
ret = _gssapi_verify_pad(input_message_buffer,
input_message_buffer->length - len,
input_message_buffer->length - len - 8,
&padlength);
if (ret)
return ret;
@ -389,9 +404,10 @@ unwrap_des3
output_message_buffer->value = malloc(output_message_buffer->length);
if(output_message_buffer->length != 0 && output_message_buffer->value == NULL)
return GSS_S_FAILURE;
memcpy (output_message_buffer->value,
p + 36,
output_message_buffer->length);
if (output_message_buffer->value != NULL)
memcpy (output_message_buffer->value,
p + 36,
output_message_buffer->length);
return GSS_S_COMPLETE;
}

3
crypto/heimdal/lib/gssapi/mech/gss_display_status.c
View File

@ -91,8 +91,7 @@ routine_error(OM_uint32 v)
"Incorrect channel bindings were supplied",
"An invalid status code was supplied",
"A token had an invalid MIC",
"No credentials were supplied, "
"or the credentials were unavailable or inaccessible.",
"No credentials were supplied, or the credentials were unavailable or inaccessible.",
"No context has been established",
"A token was invalid",
"A credential was invalid",

2
crypto/heimdal/lib/gssapi/mech/gss_import_name.c
View File

@ -113,7 +113,7 @@ _gss_import_export_name(OM_uint32 *minor_status,
len -= t;
t = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
p += 4;
/* p += 4; */
len -= 4;
if (!composite && len != t)

2
crypto/heimdal/lib/gssapi/mech/gss_mech_switch.c
View File

@ -137,6 +137,8 @@ _gss_string_to_oid(const char* s, gss_OID oid)
}
}
}
if (byte_count == 0)
return EINVAL;
if (!res) {
res = malloc(byte_count);
if (!res)

1
crypto/heimdal/lib/gssapi/mech/mech_locl.h
View File

@ -51,6 +51,7 @@
#include <roken.h>
#include <krb5.h>
#include <gssapi.h>
#include <gssapi_mech.h>
#include <gssapi_krb5.h>

2
crypto/heimdal/lib/gssapi/ntlm/init_sec_context.c
View File

@ -52,6 +52,8 @@ from_file(const char *fn, const char *target_domain,
continue;
str = NULL;
d = strtok_r(buf, ":", &str);
if (!d)
continue;
if (d && strcasecmp(target_domain, d) != 0)
continue;
u = strtok_r(NULL, ":", &str);

14
crypto/heimdal/lib/gssapi/spnego/accept_sec_context.c
View File

@ -619,13 +619,15 @@ acceptor_start
if (ret == 0)
break;
}
if (preferred_mech_type == GSS_C_NO_OID) {
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
free_NegotiationToken(&nt);
return ret;
}
}
ctx->preferred_mech_type = preferred_mech_type;
ctx->preferred_mech_type = preferred_mech_type;
if (preferred_mech_type == GSS_C_NO_OID) {
send_reject(minor_status, output_token);
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
free_NegotiationToken(&nt);
return ret;
}
/*

1
crypto/heimdal/lib/hdb/hdb-mitdb.c
View File

@ -720,7 +720,6 @@ mdb_remove(krb5_context context, HDB *db, krb5_const_principal principal)
krb5_error_code code;
krb5_data key;
mdb_principal2key(context, principal, &key);
code = db->hdb__del(context, db, key);
krb5_data_free(&key);
return code;

1
crypto/heimdal/lib/hx509/hxtool.c
View File

@ -1288,6 +1288,7 @@ request_create(struct request_create_options *opt, int argc, char **argv)
const char *outfile = argv[0];
memset(&key, 0, sizeof(key));
memset(&signer, 0, sizeof(signer));
get_key(opt->key_string,
opt->generate_key_string,

8
crypto/heimdal/lib/hx509/ks_file.c
View File

@ -533,7 +533,7 @@ store_func(hx509_context context, void *ctx, hx509_cert c)
{
struct store_ctx *sc = ctx;
heim_octet_string data;
int ret;
int ret = 0;
ret = hx509_cert_binary(context, c, &data);
if (ret)
@ -554,14 +554,14 @@ store_func(hx509_context context, void *ctx, hx509_cert c)
HX509_KEY_FORMAT_DER, &data);
if (ret)
break;
hx509_pem_write(context, _hx509_private_pem_name(key), NULL, sc->f,
data.data, data.length);
ret = hx509_pem_write(context, _hx509_private_pem_name(key), NULL,
sc->f, data.data, data.length);
free(data.data);
}
break;
}
return 0;
return ret;
}
static int

11
crypto/heimdal/lib/hx509/name.c
View File

@ -938,6 +938,7 @@ int
hx509_general_name_unparse(GeneralName *name, char **str)
{
struct rk_strpool *strpool = NULL;
int ret = 0;
*str = NULL;
@ -964,7 +965,6 @@ hx509_general_name_unparse(GeneralName *name, char **str)
case choice_GeneralName_directoryName: {
Name dir;
char *s;
int ret;
memset(&dir, 0, sizeof(dir));
dir.element = name->u.directoryName.element;
dir.u.rdnSequence = name->u.directoryName.u.rdnSequence;
@ -1017,10 +1017,9 @@ hx509_general_name_unparse(GeneralName *name, char **str)
default:
return EINVAL;
}
if (strpool == NULL)
if (ret)
rk_strpoolfree(strpool);
else if (strpool == NULL || (*str = rk_strpoolcollect(strpool)) == NULL)
return ENOMEM;
*str = rk_strpoolcollect(strpool);
return 0;
return ret;
}

6
crypto/heimdal/lib/hx509/softp11.c
View File

@ -342,6 +342,9 @@ add_object_attribute(struct st_object *o,
struct st_attr *a;
int i;
if (pValue == NULL && ulValueLen)
return CKR_ARGUMENTS_BAD;
i = o->num_attributes;
a = realloc(o->attrs, (i + 1) * sizeof(o->attrs[0]));
if (a == NULL)
@ -352,7 +355,8 @@ add_object_attribute(struct st_object *o,
o->attrs[i].attribute.pValue = malloc(ulValueLen);
if (o->attrs[i].attribute.pValue == NULL && ulValueLen != 0)
return CKR_DEVICE_MEMORY;
memcpy(o->attrs[i].attribute.pValue, pValue, ulValueLen);
if (ulValueLen)
memcpy(o->attrs[i].attribute.pValue, pValue, ulValueLen);
o->attrs[i].attribute.ulValueLen = ulValueLen;
o->num_attributes++;

4
crypto/heimdal/lib/ipc/client.c
View File

@ -332,10 +332,8 @@ connect_unix(struct path_ctx *s)
return errno;
rk_cloexec(s->fd);
if (connect(s->fd, (struct sockaddr *)&addr, sizeof(addr)) != 0) {
close(s->fd);
if (connect(s->fd, (struct sockaddr *)&addr, sizeof(addr)) != 0)
return errno;
}
return 0;
}

2
crypto/heimdal/lib/kadm5/get_s.c
View File

@ -246,7 +246,7 @@ kadm5_s_get_principal(void *server_handle,
ret = hdb_entry_get_password(context->context,
context->db, &ent.entry, &pw);
if (ret == 0) {
ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
(void) add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
free(pw);
}
krb5_clear_error_message(context->context);

2
crypto/heimdal/lib/kadm5/init_c.c
View File

@ -567,7 +567,7 @@ kadm5_c_init_with_context(krb5_context context,
void **server_handle)
{
kadm5_ret_t ret;
kadm5_client_context *ctx;
kadm5_client_context *ctx = NULL;
krb5_ccache cc;
ret = _kadm5_c_init_context(&ctx, realm_params, context);

5
crypto/heimdal/lib/kadm5/ipropd_master.c
View File

@ -755,7 +755,10 @@ write_stats(krb5_context context, slave *slaves, uint32_t current_version)
rtbl_add_column_entry(tbl, SLAVE_STATUS, "Up");
ret = krb5_format_time(context, slaves->seen, str, sizeof(str), TRUE);
rtbl_add_column_entry(tbl, SLAVE_SEEN, str);
if (ret)
rtbl_add_column_entry(tbl, SLAVE_SEEN, "<error-formatting-time>");
else
rtbl_add_column_entry(tbl, SLAVE_SEEN, str);
slaves = slaves->next;
}

2
crypto/heimdal/lib/kafs/afskrb5.c
View File

@ -89,8 +89,6 @@ v5_to_kt(krb5_creds *cred, uid_t uid, struct kafs_token *kt, int local524)
return ENOMEM;
kt->ticket_len = cred->ticket.length;
memcpy(kt->ticket, cred->ticket.data, kt->ticket_len);
ret = 0;
}

2
crypto/heimdal/lib/krb5/acl.c
View File

@ -248,7 +248,7 @@ krb5_acl_match_file(krb5_context context,
...)
{
krb5_error_code ret;
struct acl_field *acl;
struct acl_field *acl = NULL;
char buf[256];
va_list ap;
FILE *f;

2
crypto/heimdal/lib/krb5/addr_families.c
View File

@ -525,7 +525,7 @@ arange_parse_addr (krb5_context context,
return ret;
}
if(high.len != 1 && high.val[0].addr_type != low.val[0].addr_type) {
if(high.len != 1 || high.val[0].addr_type != low.val[0].addr_type) {
krb5_free_addresses(context, &low);
krb5_free_addresses(context, &high);
return -1;

2
crypto/heimdal/lib/krb5/context.c
View File

@ -97,7 +97,7 @@ init_context_from_config_file(krb5_context context)
krb5_error_code ret;
const char * tmp;
char **s;
krb5_enctype *tmptypes;
krb5_enctype *tmptypes = NULL;
INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");

10
crypto/heimdal/lib/krb5/deprecated.c
View File

@ -325,15 +325,13 @@ krb5_keytab_key_proc (krb5_context context,
ret = krb5_kt_get_entry (context, real_keytab, principal,
0, enctype, &entry);
if (ret == 0) {
ret = krb5_copy_keyblock (context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
}
if (keytab == NULL)
krb5_kt_close (context, real_keytab);
if (ret)
return ret;
ret = krb5_copy_keyblock (context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
return ret;
}

10
crypto/heimdal/lib/krb5/init_creds_pw.c
View File

@ -1491,15 +1491,13 @@ keytab_key_proc(krb5_context context, krb5_enctype enctype,
ret = krb5_kt_get_entry (context, real_keytab, principal,
0, enctype, &entry);
if (ret == 0) {
ret = krb5_copy_keyblock(context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
}
if (keytab == NULL)
krb5_kt_close (context, real_keytab);
if (ret)
return ret;
ret = krb5_copy_keyblock (context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
return ret;
}

37
crypto/heimdal/lib/krb5/keytab.c
View File

@ -348,10 +348,11 @@ krb5_kt_read_service_key(krb5_context context,
krb5_enctype enctype,
krb5_keyblock **key)
{
krb5_keytab keytab;
krb5_keytab keytab = NULL; /* Quiet lint */
krb5_keytab_entry entry;
krb5_error_code ret;
memset(&entry, 0, sizeof(entry));
if (keyprocarg)
ret = krb5_kt_resolve (context, keyprocarg, &keytab);
else
@ -361,11 +362,11 @@ krb5_kt_read_service_key(krb5_context context,
return ret;
ret = krb5_kt_get_entry (context, keytab, principal, vno, enctype, &entry);
if (ret == 0) {
ret = krb5_copy_keyblock (context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
}
krb5_kt_close (context, keytab);
if (ret)
return ret;
ret = krb5_copy_keyblock (context, &entry.keyblock, key);
krb5_kt_free_entry(context, &entry);
return ret;
}
@ -473,11 +474,13 @@ KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_kt_close(krb5_context context,
krb5_keytab id)
{
krb5_error_code ret;
krb5_error_code ret = 0;
ret = (*id->close)(context, id);
memset(id, 0, sizeof(*id));
free(id);
if (id) {
ret = (id->close)(context, id);
memset(id, 0, sizeof(*id));
free(id);
}
return ret;
}
@ -620,6 +623,7 @@ krb5_kt_get_entry(krb5_context context,
if(id->get)
return (*id->get)(context, id, principal, kvno, enctype, entry);
memset(&tmp, 0, sizeof(tmp));
ret = krb5_kt_start_seq_get (context, id, &cursor);
if (ret) {
/* This is needed for krb5_verify_init_creds, but keep error
@ -674,21 +678,21 @@ krb5_kt_copy_entry_contents(krb5_context context,
krb5_error_code ret;
memset(out, 0, sizeof(*out));
out->vno = in->vno;
ret = krb5_copy_principal (context, in->principal, &out->principal);
if (ret)
goto fail;
return ret;
ret = krb5_copy_keyblock_contents (context,
&in->keyblock,
&out->keyblock);
if (ret)
goto fail;
if (ret) {
krb5_free_principal(context, out->principal);
memset(out, 0, sizeof(*out));
return ret;
}
out->vno = in->vno;
out->timestamp = in->timestamp;
return 0;
fail:
krb5_kt_free_entry (context, out);
return ret;
}
/**
@ -869,6 +873,7 @@ krb5_kt_have_content(krb5_context context,
krb5_error_code ret;
char *name;
memset(&entry, 0, sizeof(entry));
ret = krb5_kt_start_seq_get(context, id, &cursor);
if (ret)
goto notfound;

19
crypto/heimdal/lib/krb5/krb5.h
View File

@ -914,3 +914,22 @@ extern KRB5_LIB_VARIABLE const char *krb5_cc_type_scc;
#endif /* __KRB5_H__ */
/* clang analyzer workarounds */
#ifdef __clang_analyzer__
/*
* The clang analyzer (lint) can't know that krb5_enomem() always returns
* non-zero, so code like:
*
* if ((x = malloc(...)) == NULL)
* ret = krb5_enomem(context)
* if (ret == 0)
* *x = ...;
*
* causes false positives.
*
* The fix is to make krb5_enomem() a macro that always evaluates to ENOMEM.
*/
#define krb5_enomem(c) (krb5_enomem(c), ENOMEM)
#endif

2
crypto/heimdal/lib/krb5/krb5_ccapi.h
View File

@ -38,7 +38,7 @@
#include <krb5-types.h>
#ifdef __APPLE__
#ifdef __APPLE__
#pragma pack(push,2)
#endif

6
crypto/heimdal/lib/krb5/krbhst.c
View File

@ -96,6 +96,12 @@ srv_find_realm(krb5_context context, krb5_krbhst_info ***res, int *count,
if(rr->type == rk_ns_t_srv)
num_srv++;
if (num_srv == 0) {
_krb5_debug(context, 0,
"DNS SRV RR lookup domain nodata: %s", domain);
return KRB5_KDC_UNREACH;
}
*res = malloc(num_srv * sizeof(**res));
if(*res == NULL) {
rk_dns_free_data(r);

178
crypto/heimdal/lib/krb5/pac.c
View File

@ -112,6 +112,56 @@ HMAC_MD5_any_checksum(krb5_context context,
}
static krb5_error_code pac_header_size(krb5_context context,
uint32_t num_buffers,
uint32_t *result)
{
krb5_error_code ret;
uint32_t header_size;
/* Guard against integer overflow on 32-bit systems. */
if (num_buffers > 1000) {
ret = EINVAL;
krb5_set_error_message(context, ret, "PAC has too many buffers");
return ret;
}
header_size = PAC_INFO_BUFFER_SIZE * num_buffers;
/* Guard against integer overflow on 32-bit systems. */
if (header_size > UINT32_MAX - PACTYPE_SIZE) {
ret = EINVAL;
krb5_set_error_message(context, ret, "PAC has too many buffers");
return ret;
}
header_size += PACTYPE_SIZE;
*result = header_size;
return 0;
}
static krb5_error_code pac_aligned_size(krb5_context context,
uint32_t size,
uint32_t *aligned_size)
{
krb5_error_code ret;
/* Guard against integer overflow on 32-bit systems. */
if (size > UINT32_MAX - (PAC_ALIGNMENT - 1)) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
return ret;
}
size += PAC_ALIGNMENT - 1;
/* align to PAC_ALIGNMENT */
size = (size / PAC_ALIGNMENT) * PAC_ALIGNMENT;
*aligned_size = size;
return 0;
}
/*
*
*/
@ -153,8 +203,12 @@ krb5_pac_parse(krb5_context context, const void *ptr, size_t len,
goto out;
}
p->pac = calloc(1,
sizeof(*p->pac) + (sizeof(p->pac->buffers[0]) * (tmp - 1)));
ret = pac_header_size(context, tmp, &header_end);
if (ret) {
return ret;
}
p->pac = calloc(1, header_end);
if (p->pac == NULL) {
ret = krb5_enomem(context);
goto out;
@ -163,7 +217,6 @@ krb5_pac_parse(krb5_context context, const void *ptr, size_t len,
p->pac->numbuffers = tmp;
p->pac->version = tmp2;
header_end = PACTYPE_SIZE + (PAC_INFO_BUFFER_SIZE * p->pac->numbuffers);
if (header_end > len) {
ret = EINVAL;
goto out;
@ -292,37 +345,65 @@ krb5_pac_add_buffer(krb5_context context, krb5_pac p,
{
krb5_error_code ret;
void *ptr;
size_t len, offset, header_end, old_end;
uint32_t unaligned_len, num_buffers, len, offset, header_end, old_end;
uint32_t i;
len = p->pac->numbuffers;
if (data->length > UINT32_MAX) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
return ret;
}
ptr = realloc(p->pac,
sizeof(*p->pac) + (sizeof(p->pac->buffers[0]) * len));
num_buffers = p->pac->numbuffers;
if (num_buffers >= UINT32_MAX) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
return ret;
}
ret = pac_header_size(context, num_buffers + 1, &header_end);
if (ret) {
return ret;
}
ptr = realloc(p->pac, header_end);
if (ptr == NULL)
return krb5_enomem(context);
p->pac = ptr;
for (i = 0; i < len; i++)
p->pac->buffers[i].offset_lo += PAC_INFO_BUFFER_SIZE;
for (i = 0; i < num_buffers; i++) {
if (p->pac->buffers[i].offset_lo > UINT32_MAX - PAC_INFO_BUFFER_SIZE) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
return ret;
}
p->pac->buffers[i].offset_lo += PAC_INFO_BUFFER_SIZE;
}
if (p->data.length > UINT32_MAX - PAC_INFO_BUFFER_SIZE) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
return ret;
}
offset = p->data.length + PAC_INFO_BUFFER_SIZE;
p->pac->buffers[len].type = type;
p->pac->buffers[len].buffersize = data->length;
p->pac->buffers[len].offset_lo = offset;
p->pac->buffers[len].offset_hi = 0;
p->pac->buffers[num_buffers].type = type;
p->pac->buffers[num_buffers].buffersize = data->length;
p->pac->buffers[num_buffers].offset_lo = offset;
p->pac->buffers[num_buffers].offset_hi = 0;
old_end = p->data.length;
len = p->data.length + data->length + PAC_INFO_BUFFER_SIZE;
if (len < p->data.length) {
if (offset > UINT32_MAX - data->length) {
krb5_set_error_message(context, EINVAL, "integer overrun");
return EINVAL;
}
unaligned_len = offset + data->length;
/* align to PAC_ALIGNMENT */
len = ((len + PAC_ALIGNMENT - 1) / PAC_ALIGNMENT) * PAC_ALIGNMENT;
ret = pac_aligned_size(context, unaligned_len, &len);
if (ret)
return ret;
ret = krb5_data_realloc(&p->data, len);
if (ret) {
@ -333,7 +414,7 @@ krb5_pac_add_buffer(krb5_context context, krb5_pac p,
/*
* make place for new PAC INFO BUFFER header
*/
header_end = PACTYPE_SIZE + (PAC_INFO_BUFFER_SIZE * p->pac->numbuffers);
header_end -= PAC_INFO_BUFFER_SIZE;
memmove((unsigned char *)p->data.data + header_end + PAC_INFO_BUFFER_SIZE,
(unsigned char *)p->data.data + header_end ,
old_end - header_end);
@ -346,7 +427,7 @@ krb5_pac_add_buffer(krb5_context context, krb5_pac p,
memcpy((unsigned char *)p->data.data + offset,
data->data, data->length);
memset((unsigned char *)p->data.data + offset + data->length,
0, p->data.length - offset - data->length);
0, p->data.length - unaligned_len);
p->pac->numbuffers += 1;
@ -375,8 +456,8 @@ krb5_pac_get_buffer(krb5_context context, krb5_pac p,
uint32_t i;
for (i = 0; i < p->pac->numbuffers; i++) {
const size_t len = p->pac->buffers[i].buffersize;
const size_t offset = p->pac->buffers[i].offset_lo;
const uint32_t len = p->pac->buffers[i].buffersize;
const uint32_t offset = p->pac->buffers[i].offset_lo;
if (p->pac->buffers[i].type != type)
continue;
@ -963,8 +1044,8 @@ _krb5_pac_sign(krb5_context context,
size_t server_size, priv_size;
uint32_t server_offset = 0, priv_offset = 0;
uint32_t server_cksumtype = 0, priv_cksumtype = 0;
int num = 0;
size_t i;
uint32_t num = 0;
uint32_t i;
krb5_data logon, d;
krb5_data_zero(&logon);
@ -978,8 +1059,18 @@ _krb5_pac_sign(krb5_context context,
if (num) {
void *ptr;
uint32_t len;
ptr = realloc(p->pac, sizeof(*p->pac) + (sizeof(p->pac->buffers[0]) * (p->pac->numbuffers + num - 1)));
if (p->pac->numbuffers > UINT32_MAX - num) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
ret = pac_header_size(context, p->pac->numbuffers + num, &len);
if (ret)
goto out;
ptr = realloc(p->pac, len);
if (ptr == NULL)
return krb5_enomem(context);
@ -1032,7 +1123,9 @@ _krb5_pac_sign(krb5_context context,
CHECK(ret, krb5_store_uint32(sp, p->pac->numbuffers), out);
CHECK(ret, krb5_store_uint32(sp, p->pac->version), out);
end = PACTYPE_SIZE + (PAC_INFO_BUFFER_SIZE * p->pac->numbuffers);
ret = pac_header_size(context, p->pac->numbuffers, &end);
if (ret)
goto out;
for (i = 0; i < p->pac->numbuffers; i++) {
uint32_t len;
@ -1042,11 +1135,31 @@ _krb5_pac_sign(krb5_context context,
/* store data */
if (p->pac->buffers[i].type == PAC_SERVER_CHECKSUM) {
if (server_size > UINT32_MAX - 4) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
if (end > UINT32_MAX - 4) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
len = server_size + 4;
server_offset = end + 4;
CHECK(ret, krb5_store_uint32(spdata, server_cksumtype), out);
CHECK(ret, fill_zeros(context, spdata, server_size), out);
} else if (p->pac->buffers[i].type == PAC_PRIVSVR_CHECKSUM) {
if (priv_size > UINT32_MAX - 4) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
if (end > UINT32_MAX - 4) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
len = priv_size + 4;
priv_offset = end + 4;
CHECK(ret, krb5_store_uint32(spdata, priv_cksumtype), out);
@ -1077,11 +1190,20 @@ _krb5_pac_sign(krb5_context context,
/* advance data endpointer and align */
{
int32_t e;
uint32_t e;
if (end > UINT32_MAX - len) {
ret = EINVAL;
krb5_set_error_message(context, ret, "integer overrun");
goto out;
}
end += len;
e = ((end + PAC_ALIGNMENT - 1) / PAC_ALIGNMENT) * PAC_ALIGNMENT;
if ((int32_t)end != e) {
ret = pac_aligned_size(context, end, &e);
if (ret)
goto out;
if (end != e) {
CHECK(ret, fill_zeros(context, spdata, e - end), out);
}
end = e;

9
crypto/heimdal/lib/krb5/rd_req.c
View File

@ -802,11 +802,10 @@ get_key_from_keytab(krb5_context context,
kvno,
ap_req->ticket.enc_part.etype,
&entry);
if(ret)
goto out;
ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
krb5_kt_free_entry (context, &entry);
out:
if(ret == 0) {
ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
krb5_kt_free_entry(context, &entry);
}
if(keytab == NULL)
krb5_kt_close(context, real_keytab);

2
crypto/heimdal/lib/krb5/test_store.c
View File

@ -64,7 +64,7 @@ test_int16(krb5_context context, krb5_storage *sp)
krb5_error_code ret;
int i;
int16_t val[] = {
0, 1, -1, 32768, -32767
0, 1, -1, 32767, -32768
}, v;
krb5_storage_truncate(sp, 0);

5
crypto/heimdal/lib/krb5/transited.c
View File

@ -281,6 +281,7 @@ decode_realms(krb5_context context,
r = make_realm(tmp);
if(r == NULL){
free_realms(*realms);
*realms = NULL;
return krb5_enomem(context);
}
*realms = append_realm(*realms, r);
@ -289,7 +290,8 @@ decode_realms(krb5_context context,
}
tmp = malloc(tr + i - start + 1);
if(tmp == NULL){
free(*realms);
free_realms(*realms);
*realms = NULL;
return krb5_enomem(context);
}
memcpy(tmp, start, tr + i - start);
@ -297,6 +299,7 @@ decode_realms(krb5_context context,
r = make_realm(tmp);
if(r == NULL){
free_realms(*realms);
*realms = NULL;
return krb5_enomem(context);
}
*realms = append_realm(*realms, r);

6
crypto/heimdal/lib/roken/getaddrinfo.c
View File

@ -188,7 +188,7 @@ get_null (const struct addrinfo *hints,
struct addrinfo *first = NULL;
struct addrinfo **current = &first;
int family = PF_UNSPEC;
int ret;
int ret = 0;
if (hints != NULL)
family = hints->ai_family;
@ -209,6 +209,8 @@ get_null (const struct addrinfo *hints,
if (family == PF_INET6 || family == PF_UNSPEC) {
ret = add_one (port, protocol, socktype,
&current, const_v6, &v6_addr, NULL);
if (ret)
return ret;
}
#endif
if (family == PF_INET || family == PF_UNSPEC) {
@ -216,7 +218,7 @@ get_null (const struct addrinfo *hints,
&current, const_v4, &v4_addr, NULL);
}
*res = first;
return 0;
return ret;
}
static int

6
crypto/heimdal/lib/wind/idn-lookup.c
View File

@ -156,7 +156,9 @@ main(int argc, char **argv)
if (argc == 0)
usage(1);
for (i = 0; i < argc; ++i)
lookup(argv[i]);
for (i = 0; i < argc; ++i) {
if (argv[i][0]) /* Quiet lint */
lookup(argv[i]);
}
return 0;
}

2
crypto/heimdal/lib/wind/normalize.c
View File

@ -227,9 +227,9 @@ find_composition(const uint32_t *in, unsigned in_len)
unsigned i;
if (n % 5 == 0) {
cur = *in++;
if (in_len-- == 0)
return c->val;
cur = *in++;
}
i = cur >> 16;