CVE-2014-4172

Name: CVE-2014-4172
Creator: NVD / NIST
Published: 2020-01-24T19:15:12.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.06%

Last modified Jun 17, 2026

CVE-2014-4172 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 6.06% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

6.06%

92.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Apereo	.Net Cas Client	< 1.0.2
Apereo	Java Cas Client	< 3.3.2
Apereo	Phpcas	< 1.3.3
Debian	Debian Linux	7.0
Fedoraproject	Fedora	20

References

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/137182.htmlThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759718Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1131350Issue Tracking, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/95673Third Party Advisory, VDB Entry
https://github.com/Jasig/dotnet-cas-client/commit/f0e030014fb7a39e5f38469f43199dc590fd0e8dPatch, Third Party Advisory
https://github.com/Jasig/java-cas-client/commit/ae37092100c8eaec610dab6d83e5e05a8ee58814Patch, Third Party Advisory
https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLogRelease Notes, Third Party Advisory
https://github.com/Jasig/phpCAS/pull/125Third Party Advisory
https://issues.jasig.org/browse/CASC-228Third Party Advisory
https://www.debian.org/security/2014/dsa-3017.en.htmlThird Party Advisory
https://www.mail-archive.com/cas-user%40lists.jasig.org/msg17338.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/137182.htmlThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759718Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1131350Issue Tracking, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/95673Third Party Advisory, VDB Entry
https://github.com/Jasig/dotnet-cas-client/commit/f0e030014fb7a39e5f38469f43199dc590fd0e8dPatch, Third Party Advisory
https://github.com/Jasig/java-cas-client/commit/ae37092100c8eaec610dab6d83e5e05a8ee58814Patch, Third Party Advisory
https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLogRelease Notes, Third Party Advisory
https://github.com/Jasig/phpCAS/pull/125Third Party Advisory
https://issues.jasig.org/browse/CASC-228Third Party Advisory
https://www.debian.org/security/2014/dsa-3017.en.htmlThird Party Advisory
https://www.mail-archive.com/cas-user%40lists.jasig.org/msg17338.html

Timeline

Published: Jan 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-4172?

How severe is CVE-2014-4172?

CVE-2014-4172 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.06% probability of exploitation in the next 30 days.

How do I fix CVE-2014-4172?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-4172?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST