CVE-2019-1003019 : Exploit Details and Defense Strategies

The Jenkins GitHub Authentication Plugin 0.29 and earlier contain a session fixation vulnerability that allows unauthorized attackers to impersonate users.

Understanding CVE-2019-1003019

This CVE identifies a security flaw in the Jenkins GitHub Authentication Plugin that could lead to unauthorized access.

What is CVE-2019-1003019?

A session fixation vulnerability in the GithubSecurityRealm.java file of the Jenkins GitHub Authentication Plugin 0.29 and earlier allows attackers to take over another user's identity.

The Impact of CVE-2019-1003019

Unauthorized individuals can exploit this vulnerability to assume the identity of a different user if they gain control over the pre-authentication session.

Technical Details of CVE-2019-1003019

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The Jenkins GitHub Authentication Plugin 0.29 and earlier are susceptible to a session fixation vulnerability in the GithubSecurityRealm.java file, enabling unauthorized users to impersonate others.

Affected Systems and Versions

Product: Jenkins GitHub Authentication Plugin
Vendor: Jenkins project
Versions Affected: 0.29 and earlier

Exploitation Mechanism

Attackers with control over the pre-authentication session can exploit this vulnerability to impersonate legitimate users.

Mitigation and Prevention

Protect your systems and data from potential exploits by following these mitigation strategies.

Immediate Steps to Take

Upgrade the Jenkins GitHub Authentication Plugin to a non-vulnerable version.
Monitor and restrict access to pre-authentication sessions.
Implement strong authentication mechanisms.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.