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USN-471-1: libexif vulnerability

11 June 2007

libexif vulnerability



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 versions:

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

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