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GHSA-9fc5-q25c-r2wrcritical9.8

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

Impact

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.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

DotNetCasClient NuGet
Affected rangeRecorded fix
Earlier releases before 1.0.2Ecosystem versions1.0.2

Version evidence: OSV · GHSA-9fc5-q25c-r2wr

View original version evidence (2 explicit versions)
jasig/phpcas Packagist
Affected rangeRecorded fix
Earlier releases before 1.3.3Ecosystem versions1.3.3

Version evidence: OSV · GHSA-9fc5-q25c-r2wr

View original version evidence (0 explicit versions)

Original source 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.

References