USN-2348-1: APT vulnerabilities

Ubuntu Security Notice USN-2348-1

16th September, 2014

apt vulnerabilities

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

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

Several security issues were fixed in APT.

Software description

  • apt - Advanced front-end for dpkg

Details

It was discovered that APT did not re-verify downloaded files when the
If-Modified-Since wasn't met. (CVE-2014-0487)

It was discovered that APT did not invalidate repository data when it
switched from an unauthenticated to an authenticated state. (CVE-2014-0488)

It was discovered that the APT Acquire::GzipIndexes option caused APT to
skip checksum validation. This issue only applied to Ubuntu 12.04 LTS and
Ubuntu 14.04 LTS, and was not enabled by default. (CVE-2014-0489)

It was discovered that APT did not correctly validate signatures when
manually downloading packages using the download command. This issue only
applied to Ubuntu 12.04 LTS. (CVE-2014-0490)

Update instructions

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

Ubuntu 14.04 LTS:
apt 1.0.1ubuntu2.3
Ubuntu 12.04 LTS:
apt 0.8.16~exp12ubuntu10.19
Ubuntu 10.04 LTS:
apt 0.7.25.3ubuntu9.16

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

CVE-2014-0487, CVE-2014-0488, CVE-2014-0489, CVE-2014-0490