CVE-2020-2279 : Exploit Details and Defense Strategies
Learn about CVE-2020-2279, a vulnerability in Jenkins Script Security Plugin allowing arbitrary code execution. Find out how to mitigate this security risk.
A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.74 and earlier allows attackers to execute arbitrary code on the Jenkins controller JVM.
Understanding CVE-2020-2279
This CVE involves a security flaw in the Jenkins Script Security Plugin that could lead to arbitrary code execution.
What is CVE-2020-2279?
This vulnerability allows attackers with permission to define sandboxed scripts to provide crafted return values or script binding content, enabling them to execute arbitrary code on the Jenkins controller JVM.
The Impact of CVE-2020-2279
The vulnerability poses a significant risk as it can be exploited by attackers to execute malicious code on the Jenkins controller JVM, potentially leading to system compromise and data breaches.
Technical Details of CVE-2020-2279
The technical aspects of this CVE are as follows:
Vulnerability Description
A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.74 and earlier allows attackers to execute arbitrary code on the Jenkins controller JVM by providing crafted return values or script binding content.
Affected Systems and Versions
- Product: Jenkins Script Security Plugin
- Vendor: Jenkins project
- Affected Versions: <= 1.74 (custom version), ! 1.66.5
Exploitation Mechanism
Attackers with permission to define sandboxed scripts can exploit this vulnerability by providing manipulated return values or script binding content, enabling them to execute arbitrary code on the Jenkins controller JVM.
Mitigation and Prevention
To address CVE-2020-2279, consider the following steps:
Immediate Steps to Take
- Upgrade Jenkins Script Security Plugin to a patched version.
- Restrict access to define sandboxed scripts to trusted users only.
Long-Term Security Practices
- Regularly monitor and update Jenkins and its plugins.
- Implement least privilege access controls to limit the impact of potential vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates for Jenkins and its associated plugins to mitigate the risk of exploitation.