CVE-2023-35141 Explained : Impact and Mitigation
Discover the impact and mitigation strategies for CVE-2023-35141, a security flaw in Jenkins allowing attackers to trick victims into sending unauthorized POST requests.
A security vulnerability has been discovered in Jenkins that allows attackers to trick victims into sending POST requests to unexpected endpoints.
Understanding CVE-2023-35141
This CVE (Common Vulnerabilities and Exposures) ID pertains to a security issue found in Jenkins versions 2.399 and earlier, including LTS 2.387.3 and earlier.
What is CVE-2023-35141?
In Jenkins versions affected by this CVE, POST requests are used to load context actions. If user-provided values in the URL are insufficiently escaped, attackers can manipulate victims into sending POST requests to unintended endpoints via a context menu.
The Impact of CVE-2023-35141
The exploitation of this vulnerability can lead to unauthorized POST requests being sent to unexpected endpoints within a Jenkins environment. This could potentially result in sensitive data exposure or unauthorized actions being performed.
Technical Details of CVE-2023-35141
This section delves into the specifics of the CVE, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability allows attackers to deceive users into triggering POST requests to unintended locations by abusing insufficiently escaped user-provided values in Jenkins URLs.
Affected Systems and Versions
Jenkins versions 2.399 and below, as well as LTS 2.387.3 and earlier, are susceptible to this security flaw.
Exploitation Mechanism
By manipulating user-generated values within Jenkins URLs, threat actors can orchestrate scenarios where victims unknowingly initiate POST requests to unexpected endpoints.
Mitigation and Prevention
To mitigate the risks associated with CVE-2023-35141, immediate steps need to be taken alongside the implementation of long-term security best practices.
Immediate Steps to Take
It is advised to update Jenkins to a non-vulnerable version and avoid interacting with suspicious URLs or context menus that could trigger unexpected POST requests.
Long-Term Security Practices
Incorporate regular security assessments, user awareness training, and continuous monitoring to enhance the overall security posture of Jenkins installations.
Patching and Updates
Stay informed about security advisories from Jenkins Project and promptly apply patches and updates to address known vulnerabilities.