Updated tetex packages that resolve security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having moderate security impact by the CentOS Security Response Team.
The tetex packages (teTeX) contain an implementation of TeX for Linux or UNIX systems. A buffer overflow flaw was found in the Gfx::doImage function of Xpdf which also affects teTeX due to a shared codebase. An attacker could construct a carefully crafted PDF file that could cause teTeX to crash or possibly execute arbitrary code when opened. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1125 to this issue. A buffer overflow flaw was found in the Decrypt::makeFileKey2 function of Xpdf which also affects teTeX due to a shared codebase. An attacker could construct a carefully crafted PDF file that could cause teTeX to crash or possibly execute arbitrary code when opened. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0064 to this issue. Users should update to these erratum packages which contain backported patches to correct these issues.
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