CVE-2020-15504 : Exploit Details and Defense Strategies

A SQL injection vulnerability in the user and admin web interfaces of Sophos XG Firewall v18.0 MR1 and older potentially allows an attacker to run arbitrary code remotely. The fix is built into the re-release of XG Firewall v18 MR-1 (named MR-1-Build396) and the v17.5 MR13 release. All other versions >= 17.0 have received a hotfix.

Understanding CVE-2020-15504

This CVE involves a critical SQL injection vulnerability in Sophos XG Firewall, allowing remote code execution.

What is CVE-2020-15504?

CVE-2020-15504 is a security vulnerability in Sophos XG Firewall that enables attackers to execute arbitrary code remotely through SQL injection.

The Impact of CVE-2020-15504

The vulnerability poses a severe risk as attackers can exploit it to run malicious code on affected systems, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2020-15504

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The SQL injection flaw in Sophos XG Firewall's user and admin web interfaces allows attackers to inject and execute arbitrary SQL queries, compromising the system's security.

Affected Systems and Versions

Sophos XG Firewall v18.0 MR1 and older

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious SQL code through the user or admin web interfaces, enabling them to execute unauthorized commands remotely.

Mitigation and Prevention

Protecting systems from CVE-2020-15504 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply the re-released XG Firewall v18 MR-1 (MR-1-Build396) or upgrade to v17.5 MR13
Ensure all versions >= 17.0 have received the necessary hotfix

Long-Term Security Practices

Regularly update and patch Sophos XG Firewall to prevent known vulnerabilities
Implement strict input validation mechanisms to mitigate SQL injection risks

Patching and Updates

Stay informed about security advisories from Sophos and apply patches promptly to address any new vulnerabilities