CVE-2021-39497 : Vulnerability Insights and Analysis

This CVE-2021-39497 article provides details about an SSRF vulnerability in eyoucms 1.5.4 that allows attackers to inject URLs.

Understanding CVE-2021-39497

This section will explain the impact and technical details of the CVE.

What is CVE-2021-39497?

eyoucms 1.5.4 is vulnerable to an SSRF attack due to inadequate input data sanitization, enabling an attacker to inject a URL and trigger blind SSRF through the saveRemote() function.

The Impact of CVE-2021-39497

eyoucms 1.5.4's vulnerability allows an attacker to execute blind SSRF attacks using specially crafted URLs, potentially leading to unauthorized network access and information disclosure.

Technical Details of CVE-2021-39497

This section covers the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in eyoucms 1.5.4 arises from insufficient input data sanitization, enabling malicious actors to manipulate URLs for triggering SSRF via the saveRemote() function.

Affected Systems and Versions

Affected Product: Not Applicable
Affected Version: 1.5.4

Exploitation Mechanism

The exploit involves injecting a malicious URL into the saveRemote() function of eyoucms 1.5.4 to initiate a blind SSRF attack.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-39497.

Immediate Steps to Take

Update eyoucms to the latest version.
Implement input validation mechanisms to prevent URL injections.
Regularly monitor and audit network access for unusual activities.

Long-Term Security Practices

Conduct periodic security assessments and code reviews.
Train developers and administrators on secure coding and configuration practices.
Stay informed about security best practices and emerging threats.

Patching and Updates

Ensure timely application of security patches and updates to eyoucms to address known vulnerabilities.