libapache2-mod-auth-mellon vulnerability

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

* Ubuntu 19.10
* Ubuntu 18.04 LTS

Summary

libapache2-mod-auth-mellon could be made to redirect users to
malicious sites.

Software Description

* libapache2-mod-auth-mellon - SAML 2.0 authentication module
for Apache

Details

It was discovered that mod_auth_mellon incorrectly handled certain
requests. An attacker could possibly use this issue to redirect a
user to a malicious URL.

Update instructions

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

Ubuntu 19.10
libapache2-mod-auth-mellon - 0.14.2-1ubuntu1.19.10.1

Ubuntu 18.04 LTS
libapache2-mod-auth-mellon - 0.13.1-1ubuntu0.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

* CVE-2019-13038

--- Mystic BBS v1.12 A45 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)