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bdu:2024-06190

certfr-2023-avi-0671 — De multiples vulnérabilités ont été découvertes dans Moodle. Certaines d'entre elles permettent à un attaquant de provo…

certfr-2023-avi-0671

EUVD-2026-233452

fkie_cve-2022-39369

phpCAS is an authentication library that allows PHP applications to easily authenticate users via a Central Authentication Service (CAS) server. The phpCAS library uses HTTP headers to determine the service URL used to validate tickets. This allows an attacker to control the host header and use a valid ticket granted for any authorized service in the same SSO realm (CAS server) to authenticate to the service protected by phpCAS. Depending on the settings of the CAS server service registry in worst case this may be any other service URL (if the allowed URLs are configured to "^(https)://.*") or may be strictly limited to known and authorized services in the same SSO federation if proper URL service validation is applied. This vulnerability may allow an attacker to gain access to a victim's account on a vulnerable CASified service without victim's knowledge, when the victim visits attacker's website while being logged in to the same CAS server. phpCAS 1.6.0 is a major version upgrade that starts enforcing service URL discovery validation, because there is unfortunately no 100% safe default config to use in PHP. Starting this version, it is required to pass in an additional service base URL argument when constructing the client class. For more information, please refer to the upgrading doc. This vulnerability only impacts the CAS client that the phpCAS library protects against. The problematic service URL discovery behavior in phpCAS < 1.6.0 will only be disabled, and thus you…

GHSA-8q72-6qq8-xv64 — phpCAS vulnerable to Service Hostname Discovery Exploitation

Affected: Packagist: apereo/phpcas

### Impact

The phpCAS library uses HTTP headers to determine the service URL used to validate tickets. This allows an attacker to control the host header and use a valid ticket granted for any authorized service in the same SSO realm (CAS server) to authenticate to the service protected by phpCAS. Depending on the settings of the CAS server service registry in worst case this may be any other service URL (if the allowed URLs are configured to "^(https)://.*") or may be strictly limited to known and authorized services in the same SSO federation if proper URL service validation is applied.

This vulnerability may allow an attacker to gain access to a victim's account on a vulnerable CASified service without victim's knowledge, when the victim visits attacker's website while being logged in to the same CAS server.

### Patch

phpCAS 1.6.0 is a major version upgrade that starts enforcing service URL discovery validation, because there is unfortunately no 100% safe default config to use in PHP. Starting this version, it is required to pass in an additional service base URL argument when constructing the client class.

For more information, please refer to the upgrading doc.

### Workarounds

This vulnerability only impacts the CAS client that the phpCAS library protects against. The problematic service URL discovery behavior in phpCAS < 1.6.0 will only be disabled, and thus you are not impacted from it, if the phpCAS configuration has the following setup:

1. `phpCAS::setUrl(…

gsd-2022-39369

UBUNTU-CVE-2022-39369

Affected: Ubuntu:Pro:16.04:LTS: php-cas, Ubuntu:Pro:16.04:LTS: moodle, Ubuntu:16.04:LTS: ocsinventory-server, Ubuntu:Pro:18.04:LTS: moodle, Ubuntu:18.04:LTS: php-cas, Ubuntu:20.04:LTS: php-cas, Ubuntu:22.04:LTS: ocsinventory-server, Ubuntu:22.04:LTS: php-cas

WID-SEC-W-2023-2102 — Moodle: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Moodle ausnutzen, um Sicherheitsmechanismen zu umgehen, Informationen offenzulegen und SQL-Injection- oder Cross-Site-Scripting-Angriffe durchzuführen.