CVE-2021-23927 : Vulnerability Insights and Analysis

OX App Suite through 7.10.4 allows SSRF via a URL with an @ character in an appsuite/api/oauth/proxy PUT request.

Understanding CVE-2021-23927

This CVE identifies a Server-Side Request Forgery (SSRF) vulnerability in OX App Suite versions up to 7.10.4.

What is CVE-2021-23927?

CVE-2021-23927 highlights a security flaw in OX App Suite that enables SSRF attacks by using a URL containing the @ character in a specific PUT request.

The Impact of CVE-2021-23927

Exploitation of this vulnerability could allow an attacker to send unauthorized requests from the server, potentially leading to information disclosure or further attacks.

Technical Details of CVE-2021-23927

The technical details of CVE-2021-23927 are as follows:

Vulnerability Description

The vulnerability in OX App Suite allows SSRF through a specially crafted URL with an @ character in the appsuite/api/oauth/proxy PUT request.

Affected Systems and Versions

OX App Suite versions up to 7.10.4 are affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit this vulnerability by manipulating the URL with the @ character to trigger unauthorized server requests.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-23927, consider the following steps:

Immediate Steps to Take

Update OX App Suite to the latest version that includes a patch for this vulnerability.
Monitor server logs for any suspicious activity related to SSRF attempts.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent malicious inputs.
Conduct regular security audits and assessments to identify vulnerabilities proactively.

Patching and Updates

Regularly check for security updates and patches released by OX App Suite to address this vulnerability.