USN-3817-2: Python vulnerabilities

15 November 2018

python2.7 vulnerabilities

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

  • Ubuntu 12.04 ESM

Summary

Several security issues were fixed in Python.

Software Description

  • python2.7 - An interactive high-level object-oriented language

Details

USN-3817-1 fixed a vulnerability in Python. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that Python incorrectly handled large amounts of data. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000030)

It was discovered that Python incorrectly handled running external commands in the shutil module. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000802)

It was discovered that Python incorrectly used regular expressions vulnerable to catastrophic backtracking. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2018-1060, CVE-2018-1061)

It was discovered that Python failed to initialize Expat’s hash salt. A remote attacker could possibly use this issue to cause hash collisions, leading to a denial of service. (CVE-2018-14647)

Update instructions

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

Ubuntu 12.04 ESM
python2.7 - 2.7.3-0ubuntu3.11
python2.7-minimal - 2.7.3-0ubuntu3.11

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