PGTStorage/pgt-file.php in phpCAS before 1.1.3, when proxy mode is enabled, allows local users to overwrite arbitrary files via a symlink attack on an unspecified file.

Several vulnerabilities have been discovered in phpCAS, a CAS client library for PHP. The Moodle course management system includes a copy of phpCAS.

Switch to system phpCAS.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This release contains 3 security fixes for vulnerabilities in the proxy callback mechanism. These vulnerabilities only affect phpCAS clients that are running in proxy() mode. The release is fully compatible with all versions 1.1.x versions.

The changes are :

Security Issue

  - CVE-2010-3690 phpCAS: XSS during a proxy callback     [PHPCAS-80] (Joachim Fritschi)

    - CVE-2010-3691 phpCAS: prevent symlink attacks during a       proxy callback [PHPCAS-80] (Joachim Fritschi)

    - CVE-2010-3692 phpCAS: directory traversal during a       proxy callback [PHPCAS-80] (Joachim Fritschi)

Bug Fixes

  - fix broken redirection with safari [PHPCAS-79] (Alex     Barker)

    - fix missing exit() call during ticket validation       [PHPCAS-76] (Igor Blanco,Joachim Fritschi)

    - fix a notice because REQUEST_URL is not defined on IIS       [PHPCAS-81] (Inaki Arenaza)

    - fix a typo in pgt-db.php [PHPCAS-75] (Julien       Cochennec)

    - removal of the non functional pgt-db backend       [PHPCAS-81] (Joachim Fritschi)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
52056	Debian DSA-2172-1 : moodle - several vulnerabilities	Nessus	Debian Local Security Checks	medium
50499	Fedora 13 : glpi-0.72.4-3.svn11497.fc13 (2010-16912)	Nessus	Fedora Local Security Checks	medium
50498	Fedora 12 : glpi-0.72.4-3.svn11497.fc12 (2010-16905)	Nessus	Fedora Local Security Checks	medium
50032	Fedora 12 : php-pear-CAS-1.1.3-1.fc12 (2010-15970)	Nessus	Fedora Local Security Checks	medium
50028	Fedora 13 : php-pear-CAS-1.1.3-1.fc13 (2010-15943)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2010-3691

critical

Tenable Plugins

medium

medium

medium

medium

medium