Ubuntu alert USN-4552-3 (pam-python)

From:
             
 
Mike Salvatore <mike.salvatore@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-4552-3] Pam-python regression
Date:
             
 
Wed, 28 Oct 2020 13:06:05 -0400
Message-ID:
             
 
<ee17563c-5097-c436-5e9a-f494685d0135@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4552-3
October 28, 2020

pam-python regression
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-4552-1 and USN-4552-2 introduced a regression in Pam-python

Software Description:
- pam-python: Enables PAM modules to be written in Python

Details:

USN-4552-1 and USN-4552-2 fixed a vulnerability in Pam-python. The update
introduced a regression which prevented PAM modules written in Python from
importing python modules from site-specific directories.

We apologize for the inconvenience.

Original advisory details:

 Malte Kraus discovered that Pam-python mishandled certain environment variables.
 A local attacker could potentially use this vulnerability to execute programs
 as root.

Update instructions:

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

Ubuntu 18.04 LTS:
  libpam-python                   1.0.6-1.1+deb10u1ubuntu0.1

Ubuntu 16.04 LTS:
  libpam-python                   1.0.4-1.1+deb8u1ubuntu0.1

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

References:
  https://usn.ubuntu.com/4552-3
  https://usn.ubuntu.com/4552-1
  CVE-2019-16729

Package Information:
  https://launchpad.net/ubuntu/+source/pam-python/1.0.6-1.1...
  https://launchpad.net/ubuntu/+source/pam-python/1.0.4-1.1...

-- 
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at:
https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...