Manipulation of Internal Dovecot Variables in mailcow via crafted Passwords
CVE-2023-34108

8.8HIGH

Key Information:

Vendor

mailcow

Status
mailcow-dockerized
Vendor
CVE Published:
7 June 2023

What is CVE-2023-34108?

A vulnerability in the Mailcow Mail Server Suite enables attackers to manipulate internal Dovecot variables by exploiting the passwd-verify.lua script during the password authentication process. By crafting passwords with appended key-value pairs, an authenticated attacker can alter the response generated by the script, influencing Dovecot's internal behavior. This manipulation may lead to unauthorized access, bypassing security controls, or other malicious activities. To mitigate risks, users should upgrade to version 2023-05a as there are no workarounds available.

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Deploy the Patch

Affected Version(s)

mailcow-dockerized < 2023-05a

References

https://github.com/mailcow/mailcow-dockerized/security/ad...
x_refsource_CONFIRM
https://github.com/mailcow/mailcow-dockerized/commit/f809...
x_refsource_MISC
https://github.com/VladimirBorisov/CVE_proposal/blob/main...
x_refsource_MISC

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

  • Vulnerability published

  • Vulnerability Reserved

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