Debian: DSA-3668-1: mailman security update
Summary
For the stable distribution (jessie), this problem has been fixed in
version 1:2.1.18-2+deb8u1.
For the unstable distribution (sid), this problem has been fixed in
version 1:2.1.23-1.
We recommend that you upgrade your mailman packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org