mailcow is a dockerized email package, with multiple containers linked in one bridged network. The Sync Job feature - which can be made available to standard users by assigning them the necessary permission - suffers from a shell command injection. A malicious user can abuse this vulnerability to obtain shell access to the Docker container running dovecot. The imapsync Perl script implements all the necessary functionality for this feature, including the XOAUTH2 authentication mechanism. This code path creates a shell command to call openssl. However, since different parts of the specified user password are included without any validation, one can simply execute additional shell commands. Notably, the default ACL for a newly-created mailcow account does not include the necessary permission. The Issue has been fixed within the 2023-03 Update (March 3rd 2023). As a temporary workaround the Syncjob ACL can be removed from all mailbox users, preventing from creating or changing existing Syncjobs.
References
Link | Resource |
---|---|
https://github.com/mailcow/mailcow-dockerized/releases/tag/2023-03 | Release Notes |
https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-3j2f-wf52-cjg7 | Exploit Third Party Advisory |
Configurations
History
09 Mar 2023, 20:33
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:a:mailcow:mailcow\:_dockerized:*:*:*:*:*:*:*:* | |
References | (MISC) https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-3j2f-wf52-cjg7 - Exploit, Third Party Advisory | |
References | (MISC) https://github.com/mailcow/mailcow-dockerized/releases/tag/2023-03 - Release Notes | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.8 |
04 Mar 2023, 00:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2023-03-04 00:15
Updated : 2024-02-04 23:14
NVD link : CVE-2023-26490
Mitre link : CVE-2023-26490
CVE.ORG link : CVE-2023-26490
JSON object : View
Products Affected
mailcow
- mailcow\
CWE
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')