CVE-2021-42637 : Vulnerability Insights and Analysis

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below are vulnerable to a Server Side Request Forgery (SSRF) due to the use of user-controlled input in crafting URLs.

Understanding CVE-2021-42637

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below have a vulnerability that allows attackers to exploit user-controlled input to trigger SSRF.

What is CVE-2021-42637?

The CVE-2021-42637 vulnerability in PrinterLogic Web Stack versions 19.1.1.13 SP9 and earlier enables a specific URL crafting method that leads to an SSRF security issue.

The Impact of CVE-2021-42637

The vulnerability can be exploited by malicious actors to perform Server Side Request Forgery attacks, potentially leading to unauthorized access to internal systems and data leakage.

Technical Details of CVE-2021-42637

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below are affected by this vulnerability.

Vulnerability Description

The issue arises from the utilization of user-controlled input in generating URLs, providing an avenue for SSRF exploitation.

Affected Systems and Versions

Product: PrinterLogic Web Stack
Vendor: PrinterLogic
Versions affected: 19.1.1.13 SP9 and below

Exploitation Mechanism

Attackers can manipulate input parameters to create URLs that trigger SSRF, potentially allowing them to interact with internal services and systems.

Mitigation and Prevention

Take immediate steps to address and prevent exploitation of CVE-2021-42637.

Immediate Steps to Take

Update PrinterLogic Web Stack to a patched version that resolves the SSRF vulnerability.
Implement network controls to restrict unauthorized access to critical internal resources.

Long-Term Security Practices

Regularly update and patch software to address emerging security threats.
Conduct security audits and assessments to identify and mitigate vulnerabilities proactively.

Patching and Updates

Apply security patches provided by PrinterLogic promptly to remediate the SSRF vulnerability.