Stack-based buffer overflow in lib/sh/eaccess.c in GNU Bash before 4.2 patch 33 might allow local users to bypass intended restricted shell access via a long filename in /dev/fd, which is not properly handled when expanding the /dev/fd prefix.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2012/07/11/22 | mailing list |
| http://www.mandriva.com/security/advisories?name=MDVSA-2012:128 | vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/77551 | vdb entry |
| https://hermes.opensuse.org/messages/15227834 | vendor advisory |
| http://secunia.com/advisories/51086 | third party advisory |
| http://www.openwall.com/lists/oss-security/2012/07/11/11 | mailing list |
| http://www.securityfocus.com/bid/54937 | vdb entry |
| http://security.gentoo.org/glsa/glsa-201210-05.xml | vendor advisory |
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=681278 | patch |
| ftp://ftp.gnu.org/pub/gnu/bash/bash-4.2-patches/bash42-033 | patch |
| http://www.openwall.com/lists/oss-security/2012/07/12/4 | mailing list |