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==========================================================================
Ubuntu Security Notice USN-4291-1
February 24, 2020

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

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

References:
  https://usn.ubuntu.com/4291-1
  CVE-2019-13038

Package Information:

https://launchpad.net/ubuntu/+source/libapache2-mod-auth-mellon/0.14.2-1ubuntu1.19.10.1
  https://launchpad.net/ubuntu/+source/libapache2-mod-auth-mellon/0.13.1-1ubuntu0.2


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