CVE-2016-6893

Publication date 2 September 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hijack the authentication of arbitrary users for requests that modify an option, as demonstrated by gaining access to the credentials of a victim's account.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mailman	16.10 yakkety	Fixed 1:2.1.22-1ubuntu0.1
	16.04 LTS xenial	Fixed 1:2.1.20-1ubuntu0.1
	14.04 LTS trusty	Fixed 1:2.1.16-2ubuntu0.2
	12.04 LTS precise	Fixed 1:2.1.14-3ubuntu0.4

Patch details

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

Package	Patch details
mailman	Upstream: http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/revision/1668 Upstream: https://mail.python.org/pipermail/mailman-announce/2016-August/000226.html

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3118-1
Mailman vulnerabilities
1 November 2016