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Ubuntu Security Notice USN-4552-1

Ubuntu Security Notice USN-4552-1
Posted Sep 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4552-1 - Malte Kraus discovered that Pam-python mishandled certain environment variables. A local attacker could potentially use this vulnerability to execute programs as root.

tags | advisory, local, root, python
systems | linux, ubuntu
advisories | CVE-2019-16729
SHA-256 | 15615425af77cbc41f0d9e94f0ad4a8524f300eabfc6621848fb8b81998123a7

Ubuntu Security Notice USN-4552-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4552-1
September 28, 2020

pam-python vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Pam-python could be made to crash or run programs as an administrator
if certain environment variables are set.

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

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+deb10u1build0.18.04.1

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

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

Package Information:
https://launchpad.net/ubuntu/+source/pam-python/1.0.6-1.1+deb10u1build0.18.04.1

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