GoCD is a continuous deliver server. GoCD versions prior to 24.5.0 are vulnerable to admin privilege escalation due to improper authorization of access to the admin Configuration XML UI feature, and its associated API. A malicious insider/existing authenticated GoCD user with an existing GoCD user account could abuse this vulnerability to access information intended only for GoCD admins, or to escalate their privileges to that of a GoCD admin in a persistent manner. it is not possible for this vulnerability to be abused prior to authentication/login. The issue is fixed in GoCD 24.5.0. GoCD users who are not able to immediate upgrade can mitigate this issue by using a reverse proxy, WAF or similar to externally block access paths with a /go/rails/
prefix. Blocking this route causes no loss of functionality. If it is not possible to upgrade or block the above route, consider reducing the GoCD user base to more trusted set of users, including temporarily disabling use of plugins such as the guest-login-plugin, which allow limited anonymous access as a regular user account.
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
Assuming a user with a given identity, authorization is the process of determining whether that user can access a given resource, based on the user’s privileges and any permissions or other access-control specifications that apply to the resource. When access control checks are not applied consistently - or not at all - users are able to access data or perform actions that they should not be allowed to perform. This can lead to a wide range of problems, including information exposures, denial of service, and arbitrary code execution.