libapache-mod-security: cross-site scripting

Qualys Vulnerability & Malware Research Labs discovered a vulnerability in ModSecurity, a security module for the Apache webserver. In situations where both 'Content:Disposition: attachment' and 'Content-Type: multipart' were present in HTTP headers, the vulernability could allow an attacker to bypass policy and execute cross-site script (XSS) attacks through properly crafted HTML documents.