Stack-based buffer overflow in Bash - CVE-2012-3410

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing a long filename in /dev/fd, which is not properly handled when expanding the /dev/fd prefix. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2012-3410

External References

• ftp://ftp.gnu.org/pub/gnu/bash/bash-4.2-patches/bash42-033
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=681278
• http://secunia.com/advisories/51086
• http://security.gentoo.org/glsa/glsa-201210-05.xml
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:128
• http://www.openwall.com/lists/oss-security/2012/07/11/11
• http://www.openwall.com/lists/oss-security/2012/07/11/22
• http://www.openwall.com/lists/oss-security/2012/07/12/4
• http://www.securityfocus.com/bid/54937
• https://exchange.xforce.ibmcloud.com/vulnerabilities/77551
• https://hermes.opensuse.org/messages/15227834

Related Security Bulletins

• Stack-based buffer overflow in GNU Bash
• Stack-based buffer overflow in bash (Alpine package)
• SUSE Linux update for bash