CVE-2023-40348

Vulnerability

Overview

The Jenkins Gogs Plugin, up to version 1.0.15, contains an information disclosure vulnerability in its webhook endpoint. This endpoint does not require authentication and reveals whether specific jobs exist on the Jenkins instance.

Exploitation

Details

An unauthenticated attacker can send requests to the plugin's webhook endpoint and observe the responses. By analyzing the output, the attacker can determine if particular jobs are configured, potentially mapping out the Jenkins infrastructure. No special privileges or network position is required, as the endpoint is accessible to anyone who can reach the Jenkins server [1][2].

Impact

While this vulnerability does not allow direct code execution or data modification, it leaks sensitive information about the Jenkins environment. Knowing which jobs exist could help an attacker target more critical jobs or gather intelligence for further attacks. The Jenkins security advisory notes this as an unresolved issue in the Gogs Plugin [1].

Mitigation

As of the advisory date, no fix was available for this plugin. Administrators are advised to restrict network access to the Jenkins instance or disable the plugin if not needed. The Jenkins project recommends reviewing the security advisory for updated guidance [1][3].