mod_disk_cache stores all client authentication credentials for cached objects on disk. This means proxy authentication credentials as well as in certain RFC2616 defined cases standard authentication credentials. In case of Basic Authentication *plaintext passwords* are stored on disk. See http://www.securityfocus.com/archive/1/358099/2004-03-14/2004-03-20/0 for more information and patch.
Should be fixed in 2.0.46-44.ent update.
http://rhn.redhat.com/errata/RHSA-2004-562.html
*** Bug 157474 has been marked as a duplicate of this bug. ***