The shadow database feature (syncshadowdb) in Bugzilla 2.9 through 2.16.10 allows local users to overwrite arbitrary files via a symlink attack on temporary files.

process_bug.cgi in Bugzilla 2.9 through 2.18rc2 and 2.19 from CVS does not check edit permissions on the keywords field, which allows remote authenticated users to modify the keywords in a bug via the keywordaction parameter.

Buffer overflow in LHA allows remote attackers to execute arbitrary code via long pathnames in LHarc format 2 headers for a .LHZ archive, as originally demonstrated using the "x" option but also exploitable through "l" and "v", and fixed in header.c, a different issue than CVE-2004-0771.

CGI.pl in Bugzilla before 2.14.1, when using LDAP, allows remote attackers to obtain an anonymous bind to the LDAP server via a request that does not include a password, which causes a null password to be sent to the LDAP server.

Bugzilla before 2.14.1 allows remote attackers to (1) spoof a user comment via an HTTP request to process_bug.cgi using the "who" parameter, instead of the Bugzilla_login cookie, or (2) post a bug as another user by modifying the reporter parameter to enter_bug.cgi, which is passed to post_bug.cgi.

show_bug.cgi in Bugzilla before 2.14.1 allows a user with "Bugs Access" privileges to see other products that are not accessible to the user, by submitting a bug and reading the resulting Product pulldown menu.

Bugzilla before 2.14.1 allows remote attackers to inject arbitrary SQL code and create files or gain privileges via (1) the sql parameter in buglist.cgi, (2) invalid field names from the "boolean chart" query in buglist.cgi, (3) the mybugslink parameter in userprefs.cgi, (4) a malformed bug ID in the buglist parameter in long_list.cgi, and (5) the value parameter in editusers.cgi, which allows groupset privileges to be modified by attackers with blessgroupset privileges.

Information leak in doeditvotes.cgi in Bugzilla before 2.14.1 may allow remote attackers to more easily conduct attacks on the login.