USN-632-1: Python vulnerabilities

1 August 2008

python2.4, python2.5 vulnerabilities

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

  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.06 LTS

Software Description

  • python2.4
  • python2.5

Details

It was discovered that there were new integer overflows in the imageop module. If an attacker were able to trick a Python application into processing a specially crafted image, they could execute arbitrary code with user privileges. (CVE-2008-1679)

Justin Ferguson discovered that the zlib module did not correctly handle certain archives. If an attacker were able to trick a Python application into processing a specially crafted archive file, they could execute arbitrary code with user privileges. (CVE-2008-1721)

Justin Ferguson discovered that certain string manipulations in Python could be made to overflow. If an attacker were able to pass a specially crafted string through the PyString_FromStringAndSize function, they could execute arbitrary code with user privileges. (CVE-2008-1887)

Multiple integer overflows were discovered in Python’s core and modules including hashlib, binascii, pickle, md5, stringobject, unicodeobject, bufferobject, longobject, tupleobject, stropmodule, gcmodule, and mmapmodule. If an attacker were able to exploit these flaws they could execute arbitrary code with user privileges or cause Python applications to crash, leading to a denial of service. (CVE-2008-2315, CVE-2008-2316, CVE-2008-3142, CVE-2008-3143, CVE-2008-3144).

Update instructions

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

Ubuntu 8.04 LTS
python2.4 - 2.4.5-1ubuntu4.1
python2.4-minimal - 2.4.5-1ubuntu4.1
python2.5 - 2.5.2-2ubuntu4.1
python2.5-minimal - 2.5.2-2ubuntu4.1
Ubuntu 7.10
python2.4 - 2.4.4-6ubuntu4.2
python2.4-minimal - 2.4.4-6ubuntu4.2
python2.5 - 2.5.1-5ubuntu5.2
python2.5-minimal - 2.5.1-5ubuntu5.2
Ubuntu 7.04
python2.4 - 2.4.4-2ubuntu7.2
python2.4-minimal - 2.4.4-2ubuntu7.2
python2.5 - 2.5.1-0ubuntu1.2
python2.5-minimal - 2.5.1-0ubuntu1.2
Ubuntu 6.06 LTS
python2.4 - 2.4.3-0ubuntu6.2
python2.4-minimal - 2.4.3-0ubuntu6.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to reboot your computer to effect the necessary changes.

References