USN-2472-1: unzip vulnerabilities

Ubuntu Security Notice USN-2472-1

14th January, 2015

unzip vulnerabilities

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

  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

unzip could be made to crash or run programs if it opened a specially crafted file.

Software description

  • unzip - De-archiver for .zip files

Details

Wolfgang Ettlinger discovered that unzip incorrectly handled certain
malformed zip archives. If a user or automated system were tricked into
processing a specially crafted zip archive, an attacker could possibly
execute arbitrary code.

Update instructions

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

Ubuntu 14.10:
unzip 6.0-12ubuntu1.1
Ubuntu 14.04 LTS:
unzip 6.0-9ubuntu1.1
Ubuntu 12.04 LTS:
unzip 6.0-4ubuntu2.1
Ubuntu 10.04 LTS:
unzip 6.0-1ubuntu0.1

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-2014-8139, CVE-2014-8140, CVE-2014-8141