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Ubuntu Security Notice USN-4597-1

Ubuntu Security Notice USN-4597-1
Posted Oct 22, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4597-1 - Fran

tags | advisory
systems | linux, ubuntu
advisories | CVE-2017-6807, CVE-2019-3877, CVE-2019-3878
MD5 | 786c207490434b860d22d94341723548

Ubuntu Security Notice USN-4597-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4597-1
October 22, 2020

libapache2-mod-auth-mellon vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in mod_auth_mellon.

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

Details:

Fran├žois Kooman discovered that mod_auth_mellon incorrectly handled
cookies. An attacker could possibly use this issue to cause a Cross-Site
Session Transfer attack. (CVE-2017-6807)

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. (CVE-2019-3877)

It was discovered that mod_auth_mellon incorrectly handled certain requests.
An attacker could possibly use this issue to access sensitive information.
(CVE-2019-3878)

Update instructions:

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

Ubuntu 16.04 LTS:
libapache2-mod-auth-mellon 0.12.0-2+deb9u1build0.16.04.1

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

References:
https://usn.ubuntu.com/4597-1
CVE-2017-6807, CVE-2019-3877, CVE-2019-3878

Package Information:
https://launchpad.net/ubuntu/+source/libapache2-mod-auth-mellon/0.12.0-2+deb9u1build0.16.04.1
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