CVE-2020-5239 Unspecified vulnerability in the fetchmail script in Mailu
An authenticated user can exploit a fetchmail script vulnerability to gain full administrative access to the Mailu mail server instance.
- 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-2020-5239?
CVE-2020-5239 is a high-severity vulnerability in Mailu, published on 13 Feb 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
In Mailu before version 1.7, an authenticated user can exploit a vulnerability in Mailu fetchmail script and gain full access to a Mailu instance. Mailu servers that have open registration or untrusted users are most impacted. The master and 1.7 branches are patched on our git repository. All Docker images published on docker.io/mailu for tags 1.5, 1.6, 1.7 and master are patched. For detailed instructions about patching and securing the server afterwards, see https://github.com/Mailu/Mailu/issues/1354
Weakness: CWE-863
Which versions are affected by CVE-2020-5239?
It affects 1 product.
Products include Mailu Mailu.
How do I fix CVE-2020-5239?
No fix has been published for CVE-2020-5239 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-5239 being exploited?
There is no known exploitation of CVE-2020-5239 in the wild and no public exploit code.