CVE-2019-20400 Code injection in Jira Server

High 7.8 Published Updated

Local attackers can execute arbitrary code via DLL hijacking in Jira Server by writing to a directory in the global path environment variable.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2019-20400?

CVE-2019-20400 is a high-severity code injection vulnerability in Atlassian Jira Server, published on 6 Feb 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The usage of Tomcat in Jira before version 8.5.2 allows local attackers with permission to write a dll file to a directory in the global path environmental variable can inject code into via a DLL hijacking vulnerability.

Weakness: CWE-427

Which versions are affected by CVE-2019-20400?

It affects 1 product.

Products include Atlassian Jira Server.

How do I fix CVE-2019-20400?

No fix has been published for CVE-2019-20400 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2019-20400 being exploited?

There is no known exploitation of CVE-2019-20400 in the wild and no public exploit code.

All Atlassian Jira Server vulnerabilities

Sources

Also known as GHSA-j87m-3c97-hhhg.

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