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USN-1616-1: Python 3.1 vulnerabilities

24 October 2012

Several security issues were fixed in Python 3.1.

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Releases

Packages

  • python3.1 - An interactive high-level object-oriented language (version 3.1)

Details

It was discovered that Python would prepend an empty string to sys.path
under certain circumstances. A local attacker with write access to the
current working directory could exploit this to execute arbitrary code.
This issue only affected Ubuntu 10.04 LTS. (CVE-2008-5983)

It was discovered that the audioop module did not correctly perform input
validation. If a user or automatated system were tricked into opening a
crafted audio file, an attacker could cause a denial of service via
application crash. These issues only affected Ubuntu 10.04 LTS.
(CVE-2010-1634, CVE-2010-2089)

It was discovered that Python distutils contained a race condition when
creating the ~/.pypirc file. A local attacker could exploit this to obtain
sensitive information. (CVE-2011-4944)

It was discovered that SimpleXMLRPCServer did not properly validate its
input when handling HTTP POST requests. A remote attacker could exploit
this to cause a denial of service via excessive CPU utilization.
(CVE-2012-0845)

It was discovered that Python was susceptible to hash algorithm attacks.
An attacker could cause a denial of service under certian circumstances.
This update adds the '-R' command line option and honors setting the
PYTHONHASHSEED environment variable to 'random' to salt str and datetime
objects with an unpredictable value. (CVE-2012-1150)

Serhiy Storchaka discovered that the UTF16 decoder in Python did not
properly reset internal variables after error handling. An attacker could
exploit this to cause a denial of service via memory corruption.
(CVE-2012-2135)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 11.04
Ubuntu 10.04

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

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