CVE-2014-7169

Publication date 25 September 2014

Last updated 21 August 2024

Ubuntu priority

Cvss 3 Severity Score

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact 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. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
bash	14.04 LTS trusty	Fixed 4.3-7ubuntu1.3
	12.04 LTS precise	Fixed 4.2-2ubuntu2.3
	10.04 LTS lucid	Fixed 4.1-2ubuntu3.2

Notes

mdeslaur

It was discovered that a build issue preventing the fix from being applied properly in the 4.3-7ubuntu1.2 package for Ubuntu 14.04 LTS. A respin was released to 4.3-7ubuntu1.3 to correct the issue, and USN-2363-2 was published.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
bash	Proposed: http://www.openwall.com/lists/oss-security/2014/09/25/10

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H