"infamous41md" and Chris Evans discovered several heap based buffer overflows in xpdf which are also present in pdftohtml, a utility that translates PDF documents into HTML format, and which can lead to a denial of service by crashing the application or possibly to the execution of arbitrary code.
The old stable distribution (woody) does not contain pdftohtml packages.
For the stable distribution (sarge) these problems have been fixed in version 0.36-11sarge1.
For the unstable distribution (sid) these problems will be fixed soon.
We recommend that you upgrade your pdftohtml package.