Xpdf is an X Window System based viewer for Portable Document Format (PDF) files.
During an audit of CUPS, a printing system, Zen Parsec found an integer overflow vulnerability in the pdftops filter. Since the code for pdftops is taken from the Xpdf project, all versions of Xpdf including 2.01 are also vulnerable to this issue. An attacker could create a malicious PDF file that would execute arbitrary code as the user who used Xpdf to view it.
All users of Xpdf are advised to upgrade to these errata packages which contain a patch to correct this issue.