CVE-2018-5227 Cross-site scripting in Atlassian Application Links

Medium 4.8 Published 10 Apr 2018 Updated 17 Sep 2024

Remote attackers with admin rights can inject arbitrary HTML or JavaScript via the display URL of a configured application link.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2018-5227?

CVE-2018-5227 is a medium-severity cross-site scripting vulnerability in Atlassian Application Links, published on 10 Apr 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Various administrative application link resources in Atlassian Application Links before version 5.4.4 allow remote attackers with administration rights to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the display url of a configured application link.

Weakness: CWE-79

Which versions are affected by CVE-2018-5227?

It affects 1 product.

Products include Atlassian Application Links.

How do I fix CVE-2018-5227?

No fix has been published for CVE-2018-5227 yet. Limit exposure of the affected software until one is available.

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-2018-5227 being exploited?

There is no known exploitation of CVE-2018-5227 in the wild and no public exploit code.

Sources

Also known as GHSA-2v2m-7p9m-5v4v.