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Fencer Intel
critical 9.8

CVE-2014-4172 json

Jasig Java CAS Client, .NET CAS Client, and phpCAS contain URL parameter injection vulnerability

published 2020-01-24 6 y ago modified 2026-06-17 4 mo ago also GHSA-9fc5-q25c-r2wr , EUVD-2022-3362

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.1%
EPSS 6.1% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

  • nuget DotNetCasClient 1.0.2
  • maven org.jasig.cas:cas-client 3.3.2
  • packagist jasig/phpcas 1.3.3
  • apereo .net_cas_client 1.0.2
  • apereo java_cas_client 3.3.2
  • apereo phpcas 1.3.3
  • php-cas Debian 14, Debian 13, Debian 12 1.3.3-1

debian advisories DEBIAN-CVE-2014-4172

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-4172 updated cvss 5.8

cas-client: Bypass of security constraints via URL parameter injection

  • Red Hat Enterprise Virtualization 3 jasperreports-server-pro
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Portal 5 cas-client cas-client
    affected: no fix available
  • Red Hat JBoss Portal 6.2
    fixed: vendor fix RHSA-2015:1009

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.06% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
nuget DotNetCasClient
<1.0.2
1.0.2
maven org.jasig.cas:cas-client
<3.3.2
3.3.2
packagist jasig/phpcas
<1.3.3
1.3.3

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.