CVE-2020-2135 : What You Need to Know

Jenkins Script Security Plugin version 1.70 and earlier are affected by a vulnerability that allows circumvention of sandbox protection through crafted method calls.

Understanding CVE-2020-2135

This CVE involves a security issue in the Jenkins Script Security Plugin that could be exploited to bypass sandbox protection.

What is CVE-2020-2135?

The vulnerability in Jenkins Script Security Plugin version 1.70 and earlier enables attackers to bypass sandbox protection by utilizing specific method calls on GroovyInterceptable objects.

The Impact of CVE-2020-2135

Exploiting this vulnerability could lead to unauthorized access and potential manipulation of Jenkins instances, compromising the integrity and confidentiality of data.

Technical Details of CVE-2020-2135

The technical aspects of the CVE provide insight into the vulnerability's description, affected systems, and the exploitation mechanism.

Vulnerability Description

The flaw in Jenkins Script Security Plugin allows malicious actors to bypass sandbox protection by executing tailored method calls on GroovyInterceptable objects.

Affected Systems and Versions

Product: Jenkins Script Security Plugin
Vendor: Jenkins project
Versions Affected: <= 1.70 (unspecified version type)

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific method calls on objects implementing GroovyInterceptable, enabling them to evade sandbox protection.

Mitigation and Prevention

Protecting systems from CVE-2020-2135 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Jenkins Script Security Plugin to a patched version beyond 1.70 to mitigate the vulnerability.
Monitor Jenkins instances for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Implement strict code review processes to identify and rectify potential security loopholes.
Educate users and administrators on secure coding practices and the importance of regular security updates.

Patching and Updates

Regularly check for security advisories from Jenkins project and promptly apply patches to address known vulnerabilities.