OS Command Injection in mailcow
CVE-2022-31138

8.8HIGH

Key Information:

Vendor

Mailcow

Status
Mailcow-dockerized
Vendor
CVE Published:
11 July 2022

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2022-31138?

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.

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Deploy the Patch

Affected Version(s)

mailcow-dockerized < 2022-06a

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Mailcow-CVE-2022-31138
Created by ly1g3

References

https://github.com/mailcow/mailcow-dockerized/security/ad...
x_refsource_CONFIRM
https://github.com/mailcow/mailcow-dockerized/commit/d373...
x_refsource_MISC
https://github.com/ly1g3/Mailcow-CVE-2022-31138
x_refsource_MISC

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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