Chris Evans and Marcus Meissner recently discovered several integer overflow vulnerabilities in xpdf, a viewer for PDF files. Because tetex-bin contains xpdf code, it is also affected. These vulnerabilities could be exploited by an attacker providing a specially crafted TeX, LaTeX, or PDF file. Processing such a file with pdflatex could result in abnormal program termination or the execution of program code supplied by the attacker. This bug could be exploited to gain the privileges of the user invoking pdflatex.
A buffer overflow and two remote crashes were recently discovered in gaim's MSN protocol handler. An attacker could potentially execute arbitrary code with the user's privileges by crafting and sending a particular MSN message.