CVE-2022-31138

moderate-risk
Published 2022-07-11

mailcow is a mailserver suite. Prior to mailcow-dockerized version 2022-06a, an extended privilege vulnerability can be exploited by manipulating the custom parameters regexmess, skipmess, regexflag, delete2foldersonly, delete2foldersbutnot, regextrans2, pipemess, or maxlinelengthcmd to execute arbitrary code. Users should update their mailcow instances with the `update.sh` script in the mailcow root directory to 2022-06a or newer to receive a patch for this issue. As a temporary workaround, the Syncjob ACL can be removed from all mailbox users, preventing changes to those settings.

Do I need to act?

~
6.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Mailcow

References (8)

Exploit https://github.com/ly1g3/Mailcow-CVE-2022-31138
Patch https://github.com/mailcow/mailcow-dockerized/commit/d373164e13a14e058f82c9f1918...
Release Notes https://github.com/mailcow/mailcow-dockerized/releases/tag/2022-06a
Mitigation https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-vx9w-h33p...
Exploit https://github.com/ly1g3/Mailcow-CVE-2022-31138
Patch https://github.com/mailcow/mailcow-dockerized/commit/d373164e13a14e058f82c9f1918...
Release Notes https://github.com/mailcow/mailcow-dockerized/releases/tag/2022-06a
Mitigation https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-vx9w-h33p...
44
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 9/34 · Low
Exposure 5/34 · Minimal