acroread -- mailListIsPdf() buffer overflow vulnerability

An iDEFENSE Security Advisory reports:

Remote exploitation of a buffer overflow in version 5.09 of Adobe Acrobat Reader for Unix could allow for execution of arbitrary code.

The vulnerability specifically exists in a the function mailListIsPdf(). This function checks if the input file is an email message containing a PDF. It unsafely copies user supplied data using strcat into a fixed sized buffer.

[source]