As reported on secunia http://secunia.com/advisories/13687/ Maurycy Prodeus has reported a vulnerability in Mozilla, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system. The vulnerability is caused due to a boundary error in the "MSG_UnEscapeSearchUrl()" function in "nsNNTPProtocol.cpp" when processing NNTP URIs. This can be exploited via e.g. a malicious web site to cause a heap-based buffer overflow when referencing a specially crafted, overly long "news://" URI. Successful exploitation crashes the application, but may potentially allow execution of arbitrary code. The vulnerability has been reported in version 1.7.3 and prior.
This issue should also affect RHEL2.
This appears to be the upstream fix for this issue. https://bugzilla.mozilla.org/show_bug.cgi?id=264388
Over to caillon.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-038.html