CVE-2019-17427 Cross-site scripting in n/a

Medium 6.1 Published 10 Oct 2019 Updated 5 Aug 2024

Persistent XSS in Redmine allows attackers to inject malicious scripts via textile formatting, potentially leading to session hijacking or code execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2019-17427?

CVE-2019-17427 is a medium-severity cross-site scripting vulnerability in Redmine Redmine, published on 10 Oct 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In Redmine before 3.4.11 and 4.0.x before 4.0.4, persistent XSS exists due to textile formatting errors.

Weakness: CWE-79

Which versions are affected by CVE-2019-17427?

It affects 1 product.

Products include Redmine Redmine.

How do I fix CVE-2019-17427?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-17427 being exploited?

There is no known exploitation of CVE-2019-17427 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Redmine Redmine vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-17427, GHSA-g969-264w-g9pr, UBUNTU-CVE-2019-17427.