Ubuntu 12.10 USN-1615-1 Critical: Python 3.2 Denial Of Service

ubuntu

October 23, 2012

Several security issues were fixed in Python 3.2.

Summary

Several security issues were fixed in Python 3.2.

Software Description:

- python3.2: Interactive high-level object-oriented language (version 3.2)

Details:

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. This issue

only affected Ubuntu 11.04 and 11.10. (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 updates 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. This issue only affected Ubu...

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Topics Covered

security advisory denial of service security issue software update Ubuntu Python 3.2 Python security

Update Instructions

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

Ubuntu 12.10:
  python3.2                       3.2.3-6ubuntu3.1
  python3.2-minimal               3.2.3-6ubuntu3.1

Ubuntu 12.04 LTS:
  python3.2                       3.2.3-0ubuntu3.2
  python3.2-minimal               3.2.3-0ubuntu3.2

Ubuntu 11.10:
  python3.2                       3.2.2-0ubuntu1.1
  python3.2-minimal               3.2.2-0ubuntu1.1

Ubuntu 11.04:
  python3.2                       3.2-1ubuntu1.2
  python3.2-minimal               3.2-1ubuntu1.2

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