Description
A URL parameter injection vulnerability was found in the back-channel ticket validation step of the CAS protocol in Jasig Java CAS Client before 3.3.2, .NET CAS Client before 1.0.2, and phpCAS before 1.3.3 that allow remote attackers to inject arbitrary web script or HTML via the (1) service parameter to validation/AbstractUrlBasedTicketValidator.java or (2) pgtUrl parameter to validation/Cas20ServiceTicketValidator.java.
Remediation
References
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/137182.html
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759718
https://bugzilla.redhat.com/show_bug.cgi?id=1131350
https://exchange.xforce.ibmcloud.com/vulnerabilities/95673
https://github.com/Jasig/dotnet-cas-client/commit/f0e030014fb7a39e5f38469f43199dc590fd0e8d
https://github.com/Jasig/java-cas-client/commit/ae37092100c8eaec610dab6d83e5e05a8ee58814
https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLog
https://github.com/Jasig/phpCAS/pull/125
https://issues.jasig.org/browse/CASC-228
https://www.debian.org/security/2014/dsa-3017.en.html
https://www.mail-archive.com/cas-user%40lists.jasig.org/msg17338.html