CVE-2014-6271

Published: 24 September 2014

GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.

Priority

High

CVSS 3 base score: 9.8

Status

Package Release Status
bash
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.3-7ubuntu1.1)

Notes

AuthorNote
mdeslaur
After updates were released for this issue, it was discovered
that the fix was incomplete. The new issue is being tracked
as CVE-2014-7169.

References