2.18.3, 2.20rc2, and 2.21 Security Advisory
Friday, Sep 30th, 2005Summary ======= Bugzilla is a Web-based bug-tracking system used by a large number of software projects. The following security issue has been discovered in Bugzilla: * config.cgi exposes information to users who aren't logged in, even when "requirelogin" is turned on in Bugzilla. * It is possible to bypass the "user visibility groups" restrictions if user-matching is turned on in "substring" mode. All affected installations are encouraged to upgrade as soon as possible. Vulnerability Details ===================== Class: Information Leak Versions: 2.18rc1 - 2.18.3, 2.19 - 2.20rc2, 2.21 Description: config.cgi gives JavaScript and RDF information about Bugzilla to third-party clients, including a list of products in the Bugzilla installation. The "requirelogin" parameter requires that all people be logged into Bugzilla before seeing any data, as a security measure. In affected versions, config.cgi is always accessible, and always contains information to non-logged-in users, even when "requirelogin" is turned on, possibly exposing product names that administrators expected to be confidential. References: https://bugzilla.mozilla.org/show_bug.cgi?id=308256 Class: Information Leak Versions: 2.19.1 - 2.20rc2, 2.21 Description: Bugzilla contains features to prevent users from "seeing" other users, enabled by the "usevisibilitygroups" parameter. Bugzilla also contains a feature called "user matching," which enables users to type in part of a username and get back a list of possible matches. If user matching is turned on and is in "substring" mode, all matching users will be returned to a query, regardless of the visibility groups settings, exposing users who should be invisible. References: https://bugzilla.mozilla.org/show_bug.cgi?id=308662 Vulnerability Solutions ======================= The fix for this issue is included in the releases. Upgrading to a release with the relevant fix will protect your installation from possible exploits of this issue. If you are unable to upgrade but would like to patch just the security vulnerability, there are patches available for the issue at the "References" URL. Full release downloads, patches to upgrade Bugzilla from previous versions, and git upgrade instructions are available at: https://www.bugzilla.org/download/ Credits ======= The Bugzilla team wish to thank the following people for their assistance in locating, advising us of, and assisting us to fix this issue: Issue 1 Reporter: Frédéric Buclin Issue 1 Fixed by: Frédéric Buclin, Max Kanat-Alexander Issue 2 Reporter: Frédéric Buclin Issue 2 Fixed by: Joel Peshkin, Myk Melez, Max Kanat-Alexander General information about the Bugzilla bug-tracking system can be found at: https://www.bugzilla.org/ Comments and follow-ups can be directed to the mozilla.support.bugzilla newsgroup or the support-bugzilla mailing list. https://www.bugzilla.org/support/ has directions for accessing these forums.