USN-471-1: libexif vulnerability

Releases

• Ubuntu 7.04
• Ubuntu 6.10
• Ubuntu 6.06

Details

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.

References

• CVE-2007-2645