Date: Fri, 11 Jul 2008 22:00:40 GMT From: Dmitry Andrianov <666.root@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/125523: [libc] strcpy(3) buffer overflow Message-ID: <200807112200.m6BM0eiA098529@www.freebsd.org> Resent-Message-ID: <200807112210.m6BMA1xT095028@freefall.freebsd.org>
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>Number: 125523
>Category: misc
>Synopsis: [libc] strcpy(3) buffer overflow
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Jul 11 22:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Dmitry Andrianov
>Release: 7.0
>Organization:
79.120.123.5
>Environment:
FreeBSD zingel.dubki.ru 7.0-RELEASE-p2 FreeBSD 7.0-RELEASE-p2 #4: Thu Jul 10 07:17:09 EEST 2008 beastie@zingel.dubki.ru:/usr/obj/usr/src/sys/BEASTIE i386
>Description:
Hello.
I found out an error, at the use of the following code:
--
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int foobar(int x, char *str) {
char buf[256];
strcpy(buf, str);
return x;
}
int main(int argc, char **argv) {
foobar(64, argv[1]);
return 1;
}
--
error message:
[root@zingel ~/test]# gcc -o strcpy strcpy.c
[root@zingel ~/test]# ./strcpy
Segmentation fault: 11 (core dumped)
[root@zingel ~/test]# gdb -tui strcpy
..
(gdb) r
Starting program: /root/test/strcpy
(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x2814533a in strcpy () from /lib/libc.so.7
--
Check, please.
Thank You.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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