[USN-5069-2] mod-auth-mellon vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Sep 8 18:44:58 UTC 2021

Ubuntu Security Notice USN-5069-2
September 08, 2021

libapache2-mod-auth-mellon vulnerability

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

- Ubuntu 21.04


mod-auth-mellon could be made to redirect to arbitrary sites.

Software Description:
- libapache2-mod-auth-mellon: SAML 2.0 authentication module for Apache


USN-5069-1 fixed a vulnerability in mod-auth-mellon. This update provides
the corresponding updates for Ubuntu 21.04.

Original advisory details:

 It was discovered that mod-auth-mellon incorrectly filtered certain URLs.
 A remote attacker could possibly use this issue to perform an open redirect

Update instructions:

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

Ubuntu 21.04:
  libapache2-mod-auth-mellon      0.17.0-1ubuntu0.21.04.1

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


Package Information:


-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20210908/49de920c/attachment.sig>

More information about the ubuntu-security-announce mailing list