CVE-2017-2607 : Vulnerability Insights and Analysis
Learn about CVE-2017-2607 affecting Jenkins versions prior to 2.44 and 2.32.2. Understand the impact, technical details, and mitigation steps for this cross-site scripting vulnerability.
Jenkins versions prior to 2.44 and 2.32.2 have a security flaw leading to a persisted cross-site scripting vulnerability.
Understanding CVE-2017-2607
Jenkins allows plugins to modify build logs, potentially enabling malicious users to execute cross-site scripting attacks.
What is CVE-2017-2607?
- Jenkins versions 2.44 and 2.32.2 are susceptible to a persisted cross-site scripting vulnerability (SECURITY-382).
- Malicious users with Jenkins access or SCM privileges can manipulate job configurations to launch attacks on users viewing build logs.
The Impact of CVE-2017-2607
- CVSS Score: 4.2 (Medium Severity)
- Attack Vector: Network
- Attack Complexity: High
- Confidentiality Impact: Low
- Integrity Impact: Low
- Privileges Required: Low
- User Interaction: None
- This vulnerability does not impact availability.
Technical Details of CVE-2017-2607
Jenkins vulnerability details and affected systems.
Vulnerability Description
- Jenkins versions before 2.44 and 2.32.2 are prone to a persisted cross-site scripting flaw in console notes.
- Attackers can inject malicious scripts into build logs, potentially compromising user systems.
Affected Systems and Versions
- Affected Product: Jenkins
- Vulnerable Versions: Jenkins 2.44, Jenkins 2.32.2
Exploitation Mechanism
- Malicious users can exploit this vulnerability by manipulating job configurations or altering build scripts to include serialized console notes for executing cross-site scripting attacks.
Mitigation and Prevention
Protecting systems from CVE-2017-2607.
Immediate Steps to Take
- Update Jenkins to version 2.44 or newer to mitigate the vulnerability.
- Monitor and restrict plugin access to prevent unauthorized modifications.
Long-Term Security Practices
- Regularly review and update Jenkins plugins to ensure security patches are applied promptly.
- Educate users on safe coding practices to prevent cross-site scripting vulnerabilities.
Patching and Updates
- Apply security patches and updates provided by Jenkins to address known vulnerabilities.