CVE-2014-4172

high-risk
Published 2020-01-24

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.

Do I need to act?

~
6.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (5)

.Net Cas Client
Java Cas Client
Phpcas

Affected Vendors

Debian Fedoraproject Apereo

References (22)

Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2014-August/137182.htm...
Third Party Advisory https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759718
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1131350
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/95673
Patch https://github.com/Jasig/dotnet-cas-client/commit/f0e030014fb7a39e5f38469f43199d...
Patch https://github.com/Jasig/java-cas-client/commit/ae37092100c8eaec610dab6d83e5e05a...
Release Notes https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLog
Third Party Advisory https://github.com/Jasig/phpCAS/pull/125
Third Party Advisory https://issues.jasig.org/browse/CASC-228
Third Party Advisory https://www.debian.org/security/2014/dsa-3017.en.html
https://www.mail-archive.com/cas-user%40lists.jasig.org/msg17338.html
Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2014-August/137182.htm...
Third Party Advisory https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759718
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1131350
Third Party Advisory https://exchange.xforce.ibmcloud.com/vulnerabilities/95673
Patch https://github.com/Jasig/dotnet-cas-client/commit/f0e030014fb7a39e5f38469f43199d...
Patch https://github.com/Jasig/java-cas-client/commit/ae37092100c8eaec610dab6d83e5e05a...
Release Notes https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLog
Third Party Advisory https://github.com/Jasig/phpCAS/pull/125
Third Party Advisory https://issues.jasig.org/browse/CASC-228
and 2 more references
53
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 9/34 · Low
Exposure 12/34 · Low