Updated mailman packages to correct a security issue are now available for CentOS Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team.
Mailman is software to help manage email discussion lists. A flaw in the true_path function of Mailman was discovered. A remote attacker who is a member of a private mailman list could use a carefully crafted URL and gain access to arbitrary files on the server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0202 to this issue. Note: Mailman installations running on Apache 2.0-based servers are not vulnerable to this issue. Users of Mailman should update to these erratum packages that contain a patch and are not vulnerable to this issue.