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==========================================================================
Ubuntu Security Notice USN-1513-1
July 23, 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

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

References:
  http://www.ubuntu.com/usn/usn-1513-1
  CVE-2012-2812, CVE-2012-2813, CVE-2012-2814, CVE-2012-2836,
  CVE-2012-2837, CVE-2012-2840, CVE-2012-2841

Package Information:
  https://launchpad.net/ubuntu/+source/libexif/0.6.20-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.20-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.20-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.19-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libexif/0.6.16-2.1ubuntu0.2


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