CVE-2021-44151 Explained : Impact and Mitigation
Discover how CVE-2021-44151 exposes a session hijacking vulnerability in Reprise RLM 14.2 on Windows, allowing attackers to exploit small session cookies and gain unauthorized access.
An issue was discovered in Reprise RLM 14.2 allowing session hijacking on the Windows version. Attackers can exploit small session cookies to hijack active user sessions by bruteforcing the cookie.
Understanding CVE-2021-44151
This CVE identifies a vulnerability in Reprise RLM 14.2 that enables session hijacking on the Windows platform.
What is CVE-2021-44151?
The vulnerability allows attackers to manipulate session cookies with only 4 hex-characters on the Windows version, leading to session hijacking and unauthorized access.
The Impact of CVE-2021-44151
This issue enables threat actors to take over active user sessions by exploiting the length of the session cookies, potentially resulting in unauthorized access to sensitive information.
Technical Details of CVE-2021-44151
This section delves into the technical aspects of the vulnerability in Reprise RLM 14.2.
Vulnerability Description
The vulnerability arises from the short length of session cookies, making it feasible for attackers to guess and hijack active sessions.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Affected Version: n/a
Exploitation Mechanism
- Attackers can obtain the static part of the cookie by retrieving the cookie name from a server response.
- By brute-forcing the 4-character cookie, attackers can impersonate legitimate users and access authorized content.
Mitigation and Prevention
Guidance on addressing and preventing the exploit.
Immediate Steps to Take
- Users should be vigilant for any suspicious activity indicating session hijacking.
- Implement strong session management practices to mitigate the risk.
Long-Term Security Practices
- Consider implementing multi-factor authentication to bolster security.
- Regularly review and upgrade session management protocols to prevent similar exploits.
- Educate users on the importance of secure session practices.
Patching and Updates
Stay informed about security patches and updates from Reprise RLM to address the vulnerability effectively.