XSS in Mailcow Mailcow\
CVE-2024-31204
mailcow: dockerized is an open source groupware/email suite based on docker. A security vulnerability has been identified in mailcow affecting versions prior to 2024-04. This vulnerability resides in the exception handling mechanism, specifically when not operating in DEV_MODE. The system saves exception details into a session array without proper sanitization or encoding. These details are later rendered into HTML and executed in a JavaScript block within the user's browser, without adequate escaping of HTML entities. This flaw allows for Cross-Site Scripting (XSS) attacks, where attackers can inject malicious scripts into the admin panel by triggering exceptions with controlled input. The exploitation method involves using any function that might throw an exception with user-controllable argument. This issue can lead to session hijacking and unauthorized administrative actions, posing a significant security risk. Version 2024-04 contains a fix for the issue.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.082 (94.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N.
Affected products
- Mailcow Mailcow\ — versions _dockerized
- Mailcow Mailcow-dockerized — versions < 2024-04
- Mailcow Mailcow\:_dockerized
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-31204?
- CVE-2024-31204 is a medium-severity vulnerability in Mailcow Mailcow\, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-04-04.
- How severe is CVE-2024-31204?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2024-31204 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.