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=========================================================== Ubuntu Security Notice USN-471-1 June 11, 2007 libexif vulnerability CVE-2007-2645 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 6.10 Ubuntu 7.04 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libexif12 0.6.12-2ubuntu0.1 Ubuntu 6.10: libexif12 0.6.13-4ubuntu0.1 Ubuntu 7.04: libexif12 0.6.13-5ubuntu0.1 After a standard system upgrade you need to restart your session to effect the necessary changes. Details follow: 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.