Headline
Ubuntu Security Notice USN-6914-1
Ubuntu Security Notice 6914-1 - Filip Hejsek discovered that the phpCAS library included in OCS Inventory was using HTTP headers to determine the service URL used to validate tickets. A remote attacker could possibly use this issue to gain access to a victim’s account.
==========================================================================Ubuntu Security Notice USN-6914-1July 24, 2024ocsinventory-server vulnerability==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTSSummary:OCS Inventory was vulnerable to an authentication bypass if theselected authentication method was via CAS.Software Description:- ocsinventory-server: Hardware and software inventory toolDetails:Filip Hejsek discovered that the phpCAS library included in OCS Inventorywas using HTTP headers to determine the service URL used to validatetickets. A remote attacker could possibly use this issue to gain accessto a victim's account.Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTSocsinventory-reports 2.8.1+dfsg1-1ubuntu0.1ocsinventory-server 2.8.1+dfsg1-1ubuntu0.1In general, a standard system update will make all the necessary changes.References:https://ubuntu.com/security/notices/USN-6914-1CVE-2022-39369Package Information:https://launchpad.net/ubuntu/+source/ocsinventory-server/2.8.1+dfsg1-1ubuntu0.1Related news
Ubuntu Security Notice 6913-1 - Filip Hejsek discovered that phpCAS was using HTTP headers to determine the service URL used to validate tickets. A remote attacker could possibly use this issue to gain access to a victim's account on a vulnerable CASified service. This security update introduces an incompatible API change. After applying this update, third party applications need to be modified to pass in an additional service base URL argument when constructing the client class.
### 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...
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 tha...