Vulnerability Details : CVE-2020-5239
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
Exploit prediction scoring system (EPSS) score for CVE-2020-5239
Probability of exploitation activity in the next 30 days: 0.12%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 46 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-5239
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
|
8.7
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
2.3
|
5.8
|
GitHub, Inc. |
CWE ids for CVE-2020-5239
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2020-5239
-
https://github.com/Mailu/Mailu/issues/1354
WARNING - Fetchmail security update to all branches, update ASAP · Issue #1354 · Mailu/Mailu · GitHubThird Party Advisory
-
https://github.com/Mailu/Mailu/security/advisories/GHSA-2467-p5gv-58q6
Unspecified vulnerability in the fetchmail script · Advisory · Mailu/Mailu · GitHubMitigation;Third Party Advisory
Products affected by CVE-2020-5239
- cpe:2.3:a:mailu:mailu:*:*:*:*:*:*:*:*