CVE-2017-1000394 : Exploit Details and Defense Strategies

Jenkins versions prior to 2.73.1 and 2.83 were found to have a denial-of-service vulnerability (CVE-2016-3092) in the commons-fileupload library. The issue has been addressed with an updated library.

Understanding CVE-2017-1000394

This CVE involves a vulnerability in Jenkins related to a specific library.

What is CVE-2017-1000394?

CVE-2017-1000394 is a denial-of-service vulnerability found in Jenkins versions prior to 2.73.1 and 2.83 due to an issue in the commons-fileupload library.

The Impact of CVE-2017-1000394

The vulnerability could potentially allow attackers to launch denial-of-service attacks on Jenkins instances, impacting availability.

Technical Details of CVE-2017-1000394

This section covers the technical aspects of the vulnerability.

Vulnerability Description

Jenkins versions before 2.73.1 and 2.83 bundled a commons-fileupload library with a known denial-of-service vulnerability (CVE-2016-3092). The library has since been updated to address this issue.

Affected Systems and Versions

Jenkins versions prior to 2.73.1
Jenkins versions prior to 2.83

Exploitation Mechanism

Attackers could exploit this vulnerability by sending specially crafted requests to the affected Jenkins instances, triggering the denial-of-service condition.

Mitigation and Prevention

Steps to address and prevent the CVE-2017-1000394 vulnerability.

Immediate Steps to Take

Update Jenkins to version 2.73.1 or later.
Apply security patches provided by Jenkins.

Long-Term Security Practices

Regularly monitor Jenkins security advisories.
Implement network security measures to detect and block malicious traffic.

Patching and Updates

Ensure timely application of software updates and security patches.
Follow best practices for securing Jenkins installations.