24333 2010-10-16 12:49:07 +0400 CVE-2010-3385: insecure library loading 2011-10-12 03:17:21 +0400 1 1 4 Development Sisyphus tuxguitar unstable all Linux CLOSED FIXED http://bugs.debian.org/598307 security P3 blocker --- 1 crux ded ded evg icesik mike qa-sisyphus oldest_to_newest 113836 0 crux 2010-10-16 12:49:07 +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/tuxguitar line 129: export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$MOZILLA_FIVE_HOME" When there's an empty item on the colon-separated list of LD_LIBRARY_PATH, ld.so treats it as '.' (i.e. CWD/$PWD.) If the given script is executed from a directory where a potential, local, attacker can write files to, there's a chance to exploit this bug. 113842 1 lav 2010-10-16 13:34:19 +0400 Не понял, мне прислать патч для ld.so, чтобы он пустое поле не считал '.' ? 113843 2 crux 2010-10-16 13:43:18 +0400 :) Разговоры об этом идут давно, но ещё никто не смог протащить такое в апстрим. Правильнее обернуть так: export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}$MOZILLA_FIVE_HOME" 126171 3 lav 2011-10-12 02:17:19 +0400 В данном скрипте LD_LIBRARY_PATH не может быть пустой из-за строки выше: LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}/usr/lib/tuxguitar/ 126173 4 repository-robot 2011-10-12 03:17:21 +0400 tuxguitar-1.2-alt2 -> sisyphus: * Tue Oct 11 2011 Vitaly Lipatov <lav@altlinux> 1.2-alt2 - fix CVE-2010-3385: insecure library loading (ALT bug #24333)