CVE-2018-17199 : Exploit Details and Defense Strategies

Apache HTTP Server 2.4.0 to 2.4.37 is affected by a vulnerability related to session expiration.

Understanding CVE-2018-17199

This CVE involves a security issue in Apache HTTP Server versions 2.4.0 to 2.4.37 that impacts session expiration.

What is CVE-2018-17199?

In Apache HTTP Server 2.4 release 2.4.37 and earlier versions, the session expiry time is not properly checked before decoding the session, leading to a disregard of the session expiry time for mod_session_cookie sessions.

The Impact of CVE-2018-17199

The vulnerability allows for sessions to remain active beyond their intended expiry time, potentially exposing sensitive information or allowing unauthorized access.

Technical Details of CVE-2018-17199

Apache HTTP Server 2.4.0 to 2.4.37 is susceptible to the following:

Vulnerability Description

Before decoding the session, mod_session in Apache HTTP Server 2.4.0 to 2.4.37 fails to adequately verify the session expiry time, resulting in the expiry time being ignored for mod_session_cookie sessions.

Affected Systems and Versions

Product: Apache HTTP Server
Vendor: Apache Software Foundation
Versions: Apache HTTP Server 2.4.0 to 2.4.37

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating session cookies to extend their validity, potentially gaining unauthorized access to sensitive data.

Mitigation and Prevention

To address CVE-2018-17199, consider the following steps:

Immediate Steps to Take

Apply security patches provided by Apache Software Foundation.
Monitor and review session handling mechanisms to ensure proper session expiration.

Long-Term Security Practices

Regularly update and patch Apache HTTP Server to mitigate known vulnerabilities.
Implement secure session management practices to prevent session hijacking and unauthorized access.

Patching and Updates

Stay informed about security advisories and updates from Apache Software Foundation.