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phpCAS authentication library < 1.6.0 - Service Hostname Discovery Exploitation
| CVE | CVE-2022-39369 |
|---|---|
| CVSS | 8.0 (High) |
| Publicly Published | November 1, 2022 |
| Last Updated | August 7, 2023 |
| Researcher |
Filip Hejsek
|
Description
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. WordPress plugins containing a vulnerable copy of this library may or may not be vulnerable to exploitation.
References
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Vulnerability Details for Authorizer
| Software Type | Plugin |
|---|---|
| Software Slug | authorizer (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.6.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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