Drop privileges if not using standard namelist or kernel file.
Submitted by: smpatel (Sujal Patel)
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5110a08c3c
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66e5b18f29
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=15993
@ -179,6 +179,13 @@ main(argc, argv)
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_res.retrans = 2; /* resolver timeout to 2 seconds per try */
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_res.retry = 1; /* only try once.. */
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (nlistf != NULL || memf != NULL)
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setgid(getgid());
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if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
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errx(1, "%s", errbuf);
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@ -22,7 +22,7 @@
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*/
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#ifndef lint
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static char rcsid[] = "$Id: slstat.c,v 1.3 1994/11/19 13:57:21 jkh Exp $";
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static char rcsid[] = "$Id: slstat.c,v 1.4 1995/05/30 03:52:30 rgrimes Exp $";
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#endif
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#include <stdio.h>
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@ -132,6 +132,13 @@ main(argc, argv)
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kflag++;
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}
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}
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (system != NULL || kmemf != NULL)
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setgid(getgid());
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kvm_h = kvm_openfiles(system, kmemf, NULL, O_RDONLY, errbuf);
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if (kvm_h == 0) {
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(void)fprintf(stderr,
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