CVE-2021-43945 Cross-site scripting in Jira Data Center

Medium 4.8 Published Updated

Remote attackers with Roadmaps Administrator permissions can inject arbitrary HTML or JavaScript via a Stored XSS vulnerability in Jira Server and Data Center.

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-2021-43945?

CVE-2021-43945 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 28 Feb 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers with Roadmaps Administrator permissions to inject arbitrary HTML or JavaScript via a Stored Cross-Site Scripting (SXSS) vulnerability in the /rest/jpo/1.0/hierarchyConfiguration endpoint. The affected versions are before version 8.20.3.

Weakness: CWE-79

Which versions are affected by CVE-2021-43945?

It affects 2 products.

Products include Atlassian Data Center, Atlassian Jira.

How do I fix CVE-2021-43945?

No fix has been published for CVE-2021-43945 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-2021-43945 being exploited?

There is no known exploitation of CVE-2021-43945 in the wild and no public exploit code.

All Atlassian Jira vulnerabilities

Sources

Also known as GHSA-p59c-ffj3-xrcm.

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