CVE-2020-4020 Code injection in Companion App
Remote attackers controlling a connected Confluence Server can execute arbitrary executables on the Atlassian Companion App due to protection mechanism failure.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-4020?
CVE-2020-4020 is a high-severity code injection vulnerability in Atlassian Companion App, published on 1 Jun 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure.
Which versions are affected by CVE-2020-4020?
It affects 1 product.
Products include Atlassian Companion.
How do I fix CVE-2020-4020?
No fix has been published for CVE-2020-4020 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-2020-4020 being exploited?
There is no known exploitation of CVE-2020-4020 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Companion App
Sources
Also known as GHSA-72w5-xxp4-hp3g.