CVE-2020-5239 Information

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

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/Mailu/Mailu/issues/1354 https://github.com/Mailu/Mailu/security/advisories/GHSA-2467-p5gv-58q6

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8