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=========================================================== Ubuntu Security Notice USN-376-1 November 03, 2006 imlib2 vulnerabilities CVE-2006-4806, CVE-2006-4807, CVE-2006-4808, CVE-2006-4809 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.10 Ubuntu 6.06 LTS Ubuntu 6.10 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 5.10: libimlib2 1.2.0-2.2ubuntu2.1 Ubuntu 6.06 LTS: libimlib2 1.2.1-2ubuntu0.1 Ubuntu 6.10: libimlib2 1.2.1-2ubuntu1.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: M. Joonas Pihlaja discovered that imlib2 did not sufficiently verify the validity of ARGB, JPG, LBM, PNG, PNM, TGA, and TIFF images. If a user were tricked into viewing or processing a specially crafted image with an application that uses imlib2, the flaws could be exploited to execute arbitrary code with the user's privileges.