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=========================================================== Ubuntu Security Notice USN-27-1 November 17, 2004 libxpm4 vulnerability CAN-2004-0687, CAN-2004-0688 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) The following packages are affected: libxpm4 The problem can be corrected by upgrading the affected package to version 4.3.0.dfsg.1-6ubuntu25.1. In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Chris Evans discovered several stack overflows in the versions of libXpm shipped by X.Org, XFree86, and LessTif. These overflows were fixed in the Warty development tree before its release. Mathieu Herrb of OpenBSD subsequently discovered that the original patch was insufficient to address these overflows, and thus the version of libxpm4 shipped with Warty is still vulnerable to the original overflows. These overflows do not allow privilege escalation through the X server; the overflows are in a client-side library, allowing arbitrary code execution with the privileges of the user viewing a malicious pixmap.