CVE-2021-42079 : Exploit Details and Defense Strategies

A vulnerability in OSNEXUS QuantaStor before version 6.0.0.355 allows an authenticated administrator to execute an SSRF attack through prepared alerts exclusively with POST requests.

Understanding CVE-2021-42079

What is CVE-2021-42079?

Server-Side Request Forgery (SSRF) vulnerability in OSNEXUS QuantaStor before 6.0.0.355.

The Impact of CVE-2021-42079

Attackers can exploit this vulnerability to execute unauthorized SSRF attacks.
The vulnerability's CVSS base severity is MEDIUM with a score of 6.2.
High confidentiality impact with low complexity and no integrity or availability impact.

Technical Details of CVE-2021-42079

Vulnerability Description

An authenticated administrator can trigger an SSRF attack through prepared alerts with POST requests.

Affected Systems and Versions

Vendor: OSNEXUS
Product: QuantaStor
Platforms: Windows, Linux
Versions Affected: Less than 6.0.0.355
Find more details at: OSNEXUS - Downloads

Exploitation Mechanism

The vulnerability allows an authenticated administrator to craft alerts that trigger and execute SSRF attacks using POST requests.

Mitigation and Prevention

Immediate Steps to Take

Upgrade OSNEXUS QuantaStor to the latest version.

Long-Term Security Practices

Regularly monitor and audit alerts and configurations.
Train administrators on secure coding practices.

Patching and Updates

It is crucial to keep the software up to date to prevent vulnerabilities like CVE-2021-42079.