[USN-5180-1] Mailman vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Tue Dec 7 19:23:12 UTC 2021

Ubuntu Security Notice USN-5180-1
December 07, 2021

mailman vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS


A system hardening measure could be bypassed.

Software Description:
- mailman: Web-based mailing list manager


It was discovered that Mailman incorrectly handled CSRF tokens. A remote
list member or moderator could possibly use their own token to craft an
admin request CSRF attack and set a new admin password or make other

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  mailman                         1:2.1.26-1ubuntu0.6

In general, a standard system update will make all the necessary changes.


Package Information:

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