CVE-2021-35250 : What You Need to Know

A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3 that may allow access to installation and server files. This vulnerability has been resolved in Serv-U 15.3 Hotfix 1.

Understanding CVE-2021-35250

This article discusses the impact, technical details, and mitigation steps related to the Directory Transversal Vulnerability in Serv-U 15.3.

What is CVE-2021-35250?

CVE-2021-35250 is a Directory Transversal Vulnerability in Serv-U 15.3 that could be exploited to access sensitive files on the server.

The Impact of CVE-2021-35250

This vulnerability has a high severity level with a CVSS base score of 7.5. It could lead to unauthorized access to confidential information stored on the server.

Technical Details of CVE-2021-35250

This section covers the specifics of the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability allows attackers to traverse directories and access files within the Serv-U installation and server.

Affected Systems and Versions

Serv-U 15.3 is the only version affected by this vulnerability, specifically versions less than 15.3 Hotfix 1.

Exploitation Mechanism

The vulnerability can be exploited over the network without the need for any user interaction, making it a significant threat.

Mitigation and Prevention

To protect against CVE-2021-35250, immediate steps and long-term security practices are recommended.

Immediate Steps to Take

Upgrade to the latest version of Web Help Desk (Serv-U 15.3 HF1) as advised by SolarWinds to mitigate the vulnerability.

Long-Term Security Practices

Implement regular security updates, conduct security audits, and monitor file access permissions to prevent similar vulnerabilities in the future.

Patching and Updates

Ensure that Serv-U is regularly updated with the latest patches and security fixes to address any existing vulnerabilities.