CVE-2017-2608 : Security Advisory and Response

Jenkins before versions 2.44 and 2.32.2 is vulnerable to a remote code execution flaw related to deserialization in XStream-based APIs.

Understanding CVE-2017-2608

Jenkins has a susceptibility to a security flaw that allows remote code execution due to deserialization vulnerabilities.

What is CVE-2017-2608?

Prior to versions 2.44 and 2.32.2, Jenkins is prone to a security flaw that enables remote code execution. This vulnerability is associated with deserialization issues in javax.imageio within XStream-based APIs, specifically identified as SECURITY-383.

The Impact of CVE-2017-2608

The vulnerability has a CVSS base score of 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2017-2608

Jenkins CVE-2017-2608 involves:

Vulnerability Description

Vulnerability in Jenkins allowing remote code execution through deserialization in XStream-based APIs.

Affected Systems and Versions

Affected product: Jenkins
Vulnerable versions: Jenkins 2.44, Jenkins 2.32.2

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Immediate Steps to Take:

Update Jenkins to versions 2.44 or 2.32.2 to mitigate the vulnerability.
Monitor security advisories for any patches or updates related to CVE-2017-2608. Long-Term Security Practices:
Implement secure coding practices to prevent deserialization vulnerabilities.
Regularly audit and update Jenkins and its dependencies.
Conduct security assessments to identify and remediate similar vulnerabilities.
Educate developers on secure coding practices.
Employ network security measures to detect and prevent unauthorized access.
Consider implementing application allowlisting and network segmentation.

Patching and Updates

Apply patches and updates provided by Jenkins to address the vulnerability.