The exec_command function in common/helpers.py in Gajim before 0.15 allows user-assisted remote attackers to execute arbitrary commands via shell metacharacters in an href attribute.Referenceshttp://secunia.com/advisories/48794http://secunia.com/advisories/48708http://www.openwall.com/lists/oss-security/2012/04/08/1http://security.gentoo.org/glsa/glsa-201208-04.xmlhttps://trac.gajim.org/ticket/7031http://www.openwall.com/lists/oss-security/2012/04/08/2https://trac.gajim.org/changeset/bc296e96ac10http://www.securityfocus.com/bid/52943
