CVE-2020-15275 : What You Need to Know

MoinMoin is a wiki engine that was found to have a stored XSS vulnerability due to a malicious SVG attachment. This CVE affects MoinMoin versions prior to 1.9.11.

Understanding CVE-2020-15275

In this section, we will delve into the details of the stored XSS vulnerability in MoinMoin.

What is CVE-2020-15275?

CVE-2020-15275 is a security vulnerability in MoinMoin, a wiki engine, where an attacker with write permissions can upload an SVG file containing malicious JavaScript. When a user views this SVG file on the wiki, the JavaScript gets executed in the user's browser.

The Impact of CVE-2020-15275

The impact of this vulnerability is rated as HIGH with a CVSS base score of 8.7. It can lead to confidentiality and integrity breaches as well as unauthorized code execution in the user's browser.

Technical Details of CVE-2020-15275

Let's explore the technical aspects of this vulnerability in MoinMoin.

Vulnerability Description

The vulnerability allows an attacker to perform stored XSS by uploading a malicious SVG file containing JavaScript code.

Affected Systems and Versions

Product: moin-1.9
Vendor: moinwiki
Versions Affected: < 1.9.11

Exploitation Mechanism

The attacker needs write permissions to upload a crafted SVG file containing malicious JavaScript, which is then executed in users' browsers.

Mitigation and Prevention

Learn how to mitigate and prevent the exploitation of CVE-2020-15275.

Immediate Steps to Take

Upgrade to MoinMoin version 1.9.11 or later to patch the vulnerability.
Avoid opening SVG files from untrusted sources on the wiki.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Educate users about the risks of opening files from unknown or untrusted sources.

Patching and Updates

Ensure that your MoinMoin installation is always up to date with the latest security patches and fixes.