qmailAdmin: Buffer overflow

Background

qmailAdmin is a free software package that provides a web interface for managing a qmail system with virtual domains.

Description

qmailAdmin fails to properly handle the “PATH_INFO” variable in qmailadmin.c. The PATH_INFO is a standard CGI environment variable filled with user supplied data.

Impact

A remote attacker could exploit this vulnerability by sending qmailAdmin a maliciously crafted URL that could lead to the execution of arbitrary code with the permissions of the user running qmailAdmin.

Workaround

There is no known workaround at this time.

Resolution

All qmailAdmin users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-mail/qmailadmin-1.2.10"