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| author | pst <pst@FreeBSD.org> | 1996-05-30 02:18:44 +0000 |
|---|---|---|
| committer | pst <pst@FreeBSD.org> | 1996-05-30 02:18:44 +0000 |
| commit | 9d48774924c95a2336d377163cfee753ae3d2549 (patch) | |
| tree | 1e97cf6b0399d73829f5a8315c6ea65afda4bdfc /usr.bin/ipcs/ipcs.c | |
| parent | cd113d77ab85db7f63be66c81a4eb642746aa284 (diff) | |
| download | FreeBSD-src-9d48774924c95a2336d377163cfee753ae3d2549.zip FreeBSD-src-9d48774924c95a2336d377163cfee753ae3d2549.tar.gz | |
Drop privileges if we're not reading standard kernel file or namelist.
Submitted by: smpatel (Sujal Patel)
Diffstat (limited to 'usr.bin/ipcs/ipcs.c')
| -rw-r--r-- | usr.bin/ipcs/ipcs.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/usr.bin/ipcs/ipcs.c b/usr.bin/ipcs/ipcs.c index cd4e5cc..a755b91 100644 --- a/usr.bin/ipcs/ipcs.c +++ b/usr.bin/ipcs/ipcs.c @@ -24,7 +24,7 @@ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: ipcs.c,v 1.3 1994/09/19 10:24:38 davidg Exp $ + * $Id: ipcs.c,v 1.4 1995/07/12 19:10:17 bde Exp $ */ #include <stdio.h> @@ -185,6 +185,14 @@ main(argc, argv) default: usage(); } + + /* + * Discard setgid privileges if not the running kernel so that bad + * guys can't print interesting stuff from kernel memory. + */ + if (namelist != NULL || core != NULL) + setgid(getgid()); + if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "ipcs")) == NULL) exit(1); |
