24332 2010-10-16 12:44:26 +0400 CVE-2010-3384: insecure library loading 2010-10-16 12:44:26 +0400 1 1 4 Development Sisyphus TORCS unstable all Linux NEW http://bugs.debian.org/598306 security P3 blocker --- 1 crux lav arbars lav qa-sisyphus oldest_to_newest 113835 0 crux 2010-10-16 12:44:26 +0400 The vulnerability is introduced by an insecure change to LD_LIBRARY_PATH, and environment variable used by ld.so(8) to look for libraries on a directory other than the standard paths. Vulnerable code follows: /usr/bin/nfsperf line 30: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIBDIR/lib /usr/bin/accc line 30: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIBDIR/lib /usr/bin/texmapper line 30: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIBDIR/lib /usr/bin/trackgen line 30: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIBDIR/lib /usr/bin/nfs2ac line 30: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$LIBDIR/lib /usr/bin/torcs line 40: export LD_LIBRARY_PATH=$LIBDIR/lib:$LD_LIBRARY_PATH When there's an empty item on the colon-separated list of LD_LIBRARY_PATH, ld.so treats it as '.' (i.e. CWD/$PWD.) If the given script is executed from a directory where a potential, local, attacker can write files to, there's a chance to exploit this bug.