USN-1513-1: libexif vulnerabilities

23 July 2012

libexif vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

libexif could be made to crash, run programs as your login, or expose sensitive information if it opened a specially crafted file.

Software Description

  • libexif - library to parse EXIF files

Details

Mateusz Jurczyk discovered that libexif incorrectly parsed certain malformed EXIF tags. If a user or automated system were tricked into processing a specially crafted image file, an attacker could cause libexif to crash, leading to a denial of service, or possibly obtain sensitive information. (CVE-2012-2812, CVE-2012-2813)

Mateusz Jurczyk discovered that libexif incorrectly parsed certain malformed EXIF tags. If a user or automated system were tricked into processing a specially crafted image file, an attacker could cause libexif to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2012-2814)

Yunho Kim discovered that libexif incorrectly parsed certain malformed EXIF tags. If a user or automated system were tricked into processing a specially crafted image file, an attacker could cause libexif to crash, leading to a denial of service, or possibly obtain sensitive information. (CVE-2012-2836)

Yunho Kim discovered that libexif incorrectly parsed certain malformed EXIF tags. If a user or automated system were tricked into processing a specially crafted image file, an attacker could cause libexif to crash, leading to a denial of service. (CVE-2012-2837)

Dan Fandrich discovered that libexif incorrectly parsed certain malformed EXIF tags. If a user or automated system were tricked into processing a specially crafted image file, an attacker could cause libexif to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2012-2840, CVE-2012-2841)

Update instructions

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

Ubuntu 12.04 LTS
libexif12 - 0.6.20-2ubuntu0.1
Ubuntu 11.10
libexif12 - 0.6.20-1ubuntu0.1
Ubuntu 11.04
libexif12 - 0.6.20-0ubuntu1.1
Ubuntu 10.04 LTS
libexif12 - 0.6.19-1ubuntu0.1
Ubuntu 8.04 LTS
libexif12 - 0.6.16-2.1ubuntu0.2

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