The mc_issue_note_update function in the SOAP API in MantisBT before 1.2.11 does not properly check privileges, which allows remote attackers with bug reporting privileges to edit arbitrary bugnotes via a SOAP request.
lists.fedoraproject.org/pipermail/package-announce/2012-November/092926.html
lists.fedoraproject.org/pipermail/package-announce/2012-November/093063.html
lists.fedoraproject.org/pipermail/package-announce/2012-November/093064.html
secunia.com/advisories/49414
secunia.com/advisories/51199
security.gentoo.org/glsa/glsa-201211-01.xml
www.mantisbt.org/bugs/changelog_page.php?version_id=148
www.mantisbt.org/bugs/view.php?id=14340
www.openwall.com/lists/oss-security/2012/06/09/1
www.openwall.com/lists/oss-security/2012/06/11/6
www.securityfocus.com/bid/53907
www.securityfocus.com/bid/56467
exchange.xforce.ibmcloud.com/vulnerabilities/76180
github.com/mantisbt/mantisbt/commit/175d973105fe9f03a37ced537b742611631067e0
github.com/mantisbt/mantisbt/commit/edc8142bb8ac0ac0df1a3824d78c15f4015d959e