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| author |   millert <millert@openbsd.org> | 1997-03-30 18:16:02 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 1997-03-30 18:16:02 +0000 |
| commit | d3262dce15f6973928d58d046d6f540fe57286c4 (patch) | |
| tree | a396a0bdbf6ff65980a773a74df7146f6bd99a0a | |
| parent | Make named.boot and news spool optional. (diff) | |
| download | wireguard-openbsd-d3262dce15f6973928d58d046d6f540fe57286c4.tar.xz wireguard-openbsd-d3262dce15f6973928d58d046d6f540fe57286c4.zip | |
NetBSD PR #3399: Avoid overflowing in ut_host into ut_time (bounds check). Fix from Tatoku Ogaito
| -rw-r--r-- | usr.bin/w/w.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/usr.bin/w/w.c b/usr.bin/w/w.c index 380f19b3534..e7509e0fd55 100644 --- a/usr.bin/w/w.c +++ b/usr.bin/w/w.c @@ -1,4 +1,4 @@ -/* $OpenBSD: w.c,v 1.14 1997/03/25 21:24:12 deraadt Exp $ */ +/* $OpenBSD: w.c,v 1.15 1997/03/30 18:16:02 millert Exp $ */ /*- * Copyright (c) 1980, 1991, 1993, 1994 @@ -300,8 +300,10 @@ main(argc, argv) for (ep = ehead; ep != NULL; ep = ep->next) { p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-"; - if ((x = strchr(p, ':')) != NULL) + if ((x = strchr(p, ':')) != NULL && x - p <= UT_HOSTSIZE) *x++ = '\0'; + else + x = NULL; if (!nflag && isdigit(*p) && (long)(l = inet_addr(p)) != -1 && (hp = gethostbyaddr((char *)&l, sizeof(l), AF_INET))) { |