CVE-2019-11767 : Vulnerability Insights and Analysis

PHPBB before version 3.2.6 is affected by a vulnerability that enables server-side request forgery (SSRF) through the remote avatar upload function.

Understanding CVE-2019-11767

This CVE identifies a security issue in PHPBB that allows SSRF, potentially leading to unauthorized access to files and services on the host's local network.

What is CVE-2019-11767?

Server-side request forgery (SSRF) in PHPBB before 3.2.6 permits the verification of file and service existence on the host's local network via the remote avatar upload function.

The Impact of CVE-2019-11767

The vulnerability could be exploited by attackers to probe and potentially access sensitive files and services within the local network, posing a risk of unauthorized information disclosure or further attacks.

Technical Details of CVE-2019-11767

PHPBB before version 3.2.6 is susceptible to SSRF through the remote avatar upload function.

Vulnerability Description

The remote avatar upload function in PHPBB before version 3.2.6 allows SSRF, enabling the verification of file and service existence on the host's local network.

Affected Systems and Versions

Product: PHPBB
Vendor: N/A
Versions affected: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability to perform SSRF attacks, potentially gaining unauthorized access to files and services on the host's local network.

Mitigation and Prevention

Immediate Steps to Take:

Upgrade PHPBB to version 3.2.6 or later to mitigate the SSRF vulnerability.
Monitor network traffic for any suspicious activity that could indicate SSRF attempts. Long-Term Security Practices:
Implement network segmentation to restrict access to sensitive resources.
Regularly update and patch software to address known vulnerabilities.
Educate users on safe practices to prevent SSRF and other security threats.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Stay informed about security best practices and emerging threats.

Patching and Updates

Ensure timely installation of security patches and updates for PHPBB to address known vulnerabilities and enhance overall system security.