CVE-2017-0370 : What You Need to Know

An issue exists in Mediawiki versions prior to 1.28.1 / 1.27.2 / 1.23.16 where the Spam blacklist does not work on encoded URLs that are used within the link parameter of file inclusion syntax.

Understanding CVE-2017-0370

This CVE involves a vulnerability in Mediawiki versions that renders the Spam blacklist ineffective on certain encoded URLs used in file inclusion syntax.

What is CVE-2017-0370?

CVE-2017-0370 is a security vulnerability in Mediawiki versions before 1.28.1 / 1.27.2 / 1.23.16 that allows encoded URLs within the link parameter of file inclusion syntax to bypass the Spam blacklist.

The Impact of CVE-2017-0370

This vulnerability could be exploited by attackers to include malicious content or links that should have been blocked by the Spam blacklist, potentially leading to spam or other security risks on affected systems.

Technical Details of CVE-2017-0370

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

Vulnerability Description

Mediawiki versions prior to 1.28.1 / 1.27.2 / 1.23.16 contain a flaw where the Spam blacklist fails to block encoded URLs within the link parameter of file inclusion syntax.

Affected Systems and Versions

Product: Mediawiki
Vendor: Mediawiki
Versions affected: All versions prior to 1.28.1 / 1.27.2 / 1.23.16

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting encoded URLs into the link parameter of file inclusion syntax, bypassing the Spam blacklist and potentially introducing malicious content.

Mitigation and Prevention

Protect your systems from CVE-2017-0370 with these mitigation strategies.

Immediate Steps to Take

Update Mediawiki to version 1.28.1, 1.27.2, or 1.23.16 to patch the vulnerability.
Regularly monitor and review the Spam blacklist effectiveness on your Mediawiki installation.

Long-Term Security Practices

Implement regular security updates and patches for Mediawiki to prevent future vulnerabilities.
Educate users on safe content inclusion practices to avoid security risks.

Patching and Updates

Apply the security release patches provided by Mediawiki to address the vulnerability effectively.