Full Disclosure mailing list archives

Re: GNU gcc vuln. < 3.4.3 local root (.php)


From: Andrew Farmer <andfarm () teknovis com>
Date: Mon, 17 Jan 2005 01:39:55 -0800

On 17 Jan 2005, at 00:30, ZzagorR ZzagorR wrote:
#!/usr/bin/php -a
<?
/*
GNU gcc vuln. < 3.4.3
By ZzagorR (MARMARA UNIVERSITY)
zzagorrzzagorr () hotmail com
http://www.rootbinbash.com
thanks to [NST]
ah vizeler ahhhhh
*/
<snip>

Ha ha ha.

Old "vulnerability". Equivalent to:

/* fake_vuln.c */
int getuid(void) { return 0; }
int geteuid(void) { return 0; }
int getgid(void) { return 0; }

sh % gcc -shared fake_vuln.c -o fake_vuln.so
sh % LD_PRELOAD=`pwd`/fake_vuln.so /bin/sh
sh # id
uid=0(root) gid=0(root) <etc etc etc>
sh # cat /etc/shadow
cat: /etc/shadow: Permission denied

The sad part is that rootbinbash.com has posted this as a real vulnerability.

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