CVE-2023-51665 : What You Need to Know

Audiobookshelf is vulnerable to Blind SSRF in

Auth.js

prior to version 2.7.0. Learn about the impact, technical details, and mitigation steps related to this CVE.

Understanding CVE-2023-51665

Audiobookshelf, a self-hosted audiobook and podcast server, contains a critical vulnerability in Auth.js that allows unauthenticated blind Server-Side Request Forgery (SSRF) attacks.

What is CVE-2023-51665?

CVE-2023-51665 highlights a security flaw in Audiobookshelf versions earlier than 2.7.0, leaving them exposed to SSRF attacks, potentially leading to unauthorized access or data leakage.

The Impact of CVE-2023-51665

The vulnerability in Audiobookshelf could be exploited by attackers to perform SSRF attacks, bypass security controls, and potentially access sensitive information or resources on the server. This poses a significant risk to the confidentiality of data.

Technical Details of CVE-2023-51665

The specific details of the vulnerability include:

Vulnerability Description

Audiobookshelf versions prior to 2.7.0 are susceptible to blind SSRF attacks in

Auth.js

. The vulnerability allows attackers to make arbitrary requests on behalf of the server.

Affected Systems and Versions

Vendor: advplyr
Product: audiobookshelf
Vulnerable Versions: < 2.7.0

Exploitation Mechanism

The vulnerability arises from insufficient validation of user-supplied input in the Auth.js file, enabling attackers to manipulate server requests and potentially access internal systems or data.

Mitigation and Prevention

To safeguard systems against CVE-2023-51665, consider the following steps:

Immediate Steps to Take

It is crucial to update Audiobookshelf to version 2.7.0 or later to mitigate the SSRF vulnerability in Auth.js. Additionally, review and restrict access to sensitive server-side functionalities to prevent unauthorized requests.

Long-Term Security Practices

Implement robust input validation and sanitize user input to block SSRF attack vectors. Regularly monitor and audit server requests for unusual behavior or suspicious activities.

Patching and Updates

Stay informed about security advisories from Audiobookshelf and promptly apply patches or updates to address known vulnerabilities and enhance the overall security posture of the system.