CVE-2020-14173 Cross-site scripting in Jira Server

Medium 5.4 Published Updated

Remote attackers can inject arbitrary HTML or JavaScript via the file upload feature in Atlassian Jira Server, potentially leading to session hijacking or malicious actions.

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

What is CVE-2020-14173?

CVE-2020-14173 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 3 Jul 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The file upload feature in Atlassian Jira Server and Data Center in affected versions allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability. The affected versions are before version 8.5.4, from version 8.6.0 before 8.6.2, and from version 8.7.0 before 8.7.1.

Weakness: CWE-79

Which versions are affected by CVE-2020-14173?

It affects 4 products.

Products include Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server, Atlassian Jira Software Data Center.

How do I fix CVE-2020-14173?

No fix has been published for CVE-2020-14173 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-2020-14173 being exploited?

There is no known exploitation of CVE-2020-14173 in the wild and no public exploit code.

All Atlassian Jira vulnerabilities

Sources

Also known as GHSA-qwxf-m68g-w6v5.

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