CVE-2023-41934 : Exploit Details and Defense Strategies

A security vulnerability has been identified in the Jenkins Pipeline Maven Integration Plugin that could potentially affect the confidentiality of credentials in Pipeline build logs. Learn more about CVE-2023-41934 and how to address this issue.

Understanding CVE-2023-41934

CVE-2023-41934 is a security vulnerability found in Jenkins Pipeline Maven Integration Plugin versions 1330.v18e473854496 and earlier. This vulnerability exposes usernames of credentials in custom Maven settings in Pipeline build logs when the "Treat username as secret" option is enabled.

What is CVE-2023-41934?

The CVE-2023-41934 vulnerability arises from the improper masking of usernames in Pipeline build logs. When the affected plugin is used with specific configurations, usernames are not properly obfuscated, potentially leaking sensitive information.

The Impact of CVE-2023-41934

The impact of CVE-2023-41934 is significant as it can lead to the exposure of usernames in build logs. This exposure could compromise the confidentiality of credentials and pose a security risk to the Jenkins environment.

Technical Details of CVE-2023-41934

The following technical details shed light on the vulnerability and its implications:

Vulnerability Description

Jenkins Pipeline Maven Integration Plugin versions 1330.v18e473854496 and earlier fail to mask usernames of credentials in Pipeline build logs when the "Treat username as secret" option is checked. This oversight exposes sensitive information that should remain confidential.

Affected Systems and Versions

The vulnerability impacts systems running Jenkins Pipeline Maven Integration Plugin versions 1330.v18e473854496 and earlier. Any instances with the affected plugin and configuration are at risk of exposing usernames in build logs.

Exploitation Mechanism

Exploiting CVE-2023-41934 requires access to Jenkins instances using the vulnerable plugin. By enabling the "Treat username as secret" option in custom Maven settings, an attacker could potentially retrieve usernames from build logs.

Mitigation and Prevention

To address CVE-2023-41934, immediate actions should be taken to secure affected systems and prevent unauthorized access:

Immediate Steps to Take

Update Jenkins Pipeline Maven Integration Plugin to the latest patched version to mitigate the vulnerability.
Disable the "Treat username as secret" option in custom Maven settings as a temporary workaround.

Long-Term Security Practices

Regularly monitor Jenkins security advisories and apply patches promptly to prevent potential security risks.
Educate users on secure configuration practices to avoid unintentional exposure of sensitive information.

Patching and Updates

Refer to the Jenkins Security Advisory 2023-09-06 for detailed guidance on addressing CVE-2023-41934.