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=========================================================== Ubuntu Security Notice USN-236-1 January 05, 2006 xpdf, poppler, cupsys, tetex-bin vulnerabilities CVE-2005-3624, CVE-2005-3625, CVE-2005-3626, CVE-2005-3627 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) Ubuntu 5.04 (Hoary Hedgehog) Ubuntu 5.10 (Breezy Badger) The following packages are affected: cupsys libpoppler0c2 tetex-bin xpdf-reader xpdf-utils The problem can be corrected by upgrading the affected package to the following versions: Ubuntu 4.10: xpdf: 3.00-8ubuntu1.10 cupsys: 1.1.20final+cvs20040330-4ubuntu16.10 tetex-bin: 2.0.2-21ubuntu0.7 Ubuntu 5.04: xpdf: 3.00-11ubuntu3.6 tetex-bin: 2.0.2-25ubuntu0.4 Ubuntu 5.10: libpoppler0c2: 0.4.2-0ubuntu6.5 tetex-bin: 2.0.2-30ubuntu3.4 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Chris Evans discovered several integer overflows in the XPDF code, which is present in xpdf, the Poppler library, and tetex-bin. By tricking an user into opening a specially crafted PDF file, an attacker could exploit this to execute arbitrary code with the privileges of the application that processes the document. The CUPS printing system also uses XPDF code to convert PDF files to PostScript. By attempting to print such a crafted PDF file, a remote attacker could execute arbitrary code with the privileges of the printer server (user 'cupsys').