CVE-2019-17563 : Security Advisory and Response

Apache Tomcat versions 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49, and 7.0.0 to 7.0.98 were affected by a vulnerability related to FORM authentication and session fixation.

Understanding CVE-2019-17563

This CVE entry addresses a security vulnerability in Apache Tomcat versions 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49, and 7.0.0 to 7.0.98.

What is CVE-2019-17563?

CVE-2019-17563 is a vulnerability in Apache Tomcat that could potentially allow for a session fixation attack when using FORM authentication. Although the exploit window was considered too small for practical exploitation, it was treated as a security vulnerability.

The Impact of CVE-2019-17563

The vulnerability could have allowed attackers to perform a session fixation attack, compromising the security of the affected systems.

Technical Details of CVE-2019-17563

Apache Tomcat CVE-2019-17563 has the following technical details:

Vulnerability Description

The vulnerability in Apache Tomcat versions 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49, and 7.0.0 to 7.0.98 was related to FORM authentication and the potential for a session fixation attack.

Affected Systems and Versions

Apache Tomcat versions 9.0.0.M1 to 9.0.29
Apache Tomcat versions 8.5.0 to 8.5.49
Apache Tomcat versions 7.0.0 to 7.0.98

Exploitation Mechanism

The vulnerability could have been exploited through a session fixation attack when using FORM authentication in the affected Apache Tomcat versions.

Mitigation and Prevention

To address CVE-2019-17563, consider the following mitigation and prevention strategies:

Immediate Steps to Take

Update Apache Tomcat to a non-vulnerable version.
Monitor for any unusual activity on the network.

Long-Term Security Practices

Regularly update and patch Apache Tomcat and other software components.
Implement strong authentication mechanisms and session management practices.

Patching and Updates

Ensure timely application of security patches and updates to Apache Tomcat to mitigate the risk of exploitation.