USN-471-1: libexif vulnerability

Ubuntu Security Notice USN-471-1

11th June, 2007

libexif vulnerability

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

  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS


Victor Stinner discovered that libexif did not correctly validate the
size of some EXIF header fields. By tricking a user into opening an
image with specially crafted EXIF headers, a remote attacker could cause
the application using libexif to crash, resulting in a denial of service.

Update instructions

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

Ubuntu 7.04:
libexif12 0.6.13-5ubuntu0.1
Ubuntu 6.10:
libexif12 0.6.13-4ubuntu0.1
Ubuntu 6.06 LTS:
libexif12 0.6.12-2ubuntu0.1

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to
effect the necessary changes.