CVE-2018-10240 : What You Need to Know

SolarWinds Serv-U MFT versions prior to 15.1.6 HFv1 have a security flaw where authenticated users are given a session token with low entropy, allowing attackers to hijack sessions.

Understanding CVE-2018-10240

SolarWinds Serv-U MFT before 15.1.6 HFv1 assigns authenticated users a low-entropy session token that can be included in requests to the application as a URL parameter in lieu of a session cookie.

What is CVE-2018-10240?

This CVE describes a vulnerability in SolarWinds Serv-U MFT versions prior to 15.1.6 HFv1, where authenticated users receive a session token with low entropy, enabling attackers to hijack sessions by brute-forcing the token.

The Impact of CVE-2018-10240

Attackers can exploit this vulnerability to obtain a user's session cookie and take over their session.

Technical Details of CVE-2018-10240

SolarWinds Serv-U MFT versions prior to 15.1.6 HFv1 are affected by this vulnerability.

Vulnerability Description

Authenticated users receive a low-entropy session token that can be used as a URL parameter instead of a session cookie.

Affected Systems and Versions

SolarWinds Serv-U MFT versions prior to 15.1.6 HFv1

Exploitation Mechanism

Attackers can brute-force the session token to obtain the user's session cookie and hijack their session.

Mitigation and Prevention

Immediate Steps to Take

Upgrade to version 15.1.6 HFv1 or later to mitigate this vulnerability.
Monitor for any unauthorized access or unusual activities on the application. Long-Term Security Practices
Implement strong session management practices to enhance session security.
Regularly review and update security configurations to prevent similar vulnerabilities.
Educate users on best practices for session security. Patch and Updates
Apply patches and updates provided by SolarWinds to address this vulnerability.