The _bad_protocol_once function in phpgwapi/inc/class.kses.inc.php in KSES, as used in eGroupWare before 1.4.003, Moodle before 1.8.5, and other products, allows remote attackers to bypass HTML filtering and conduct cross-site scripting (XSS) attacks via a string containing crafted URL protocols.

References

• https://nvd.nist.gov/vuln/detail/CVE-2008-1502
• https://exchange.xforce.ibmcloud.com/vulnerabilities/41435
• https://usn.ubuntu.com/658-1/
• https://www.redhat.com/archives/fedora-package-announce/2008-July/msg00331.html
• http://docs.moodle.org/en/Release_Notes#Moodle_1.8.5
• http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00006.html
• http://www.debian.org/security/2008/dsa-1691
• http://www.debian.org/security/2009/dsa-1871
• http://www.egroupware.org/changelog
• http://www.egroupware.org/viewvc/branches/1.4/phpgwapi/inc/class.kses.inc.php?r1=23625&r2=25110&pathrev=25110
• http://www.gentoo.org/security/en/glsa/glsa-200805-04.xml
• http://www.openwall.com/lists/oss-security/2008/07/08/14
• https://web.archive.org/web/20080709031015/http://www.securityfocus.com/bid/28424
• https://web.archive.org/web/20080828131802/http://secunia.com/advisories/31017
• https://web.archive.org/web/20080905011948/http://secunia.com/advisories/31018
• https://web.archive.org/web/20081011001554/http://secunia.com/advisories/31167
• https://web.archive.org/web/20081025081058/http://secunia.com/advisories/32400
• https://web.archive.org/web/20081028073531/http://secunia.com/advisories/32446
• https://web.archive.org/web/20090129193143/http://secunia.com/advisories/30986
• https://web.archive.org/web/20100819022833/http://secunia.com/advisories/30073
• https://web.archive.org/web/20120719035305/http://secunia.com/advisories/29491