CVE-2023-34108
Dovecot Password Manipulation in mailcow
Description
mailcow is a mail server suite based on Dovecot, Postfix and other open source software, that provides a modern web UI for user/server administration. A vulnerability has been discovered in mailcow which allows an attacker to manipulate internal Dovecot variables by using specially crafted passwords during the authentication process. The issue arises from the behavior of the `passwd-verify.lua` script, which is responsible for verifying user passwords during login attempts. Upon a successful login, the script returns a response in the format of "password=<valid-password>", indicating the successful authentication. By crafting a password with additional key-value pairs appended to it, an attacker can manipulate the returned string and influence the internal behavior of Dovecot. For example, using the password "123 mail_crypt_save_version=0" would cause the `passwd-verify.lua` script to return the string "password=123 mail_crypt_save_version=0". Consequently, Dovecot will interpret this string and set the internal variables accordingly, leading to unintended consequences. This vulnerability can be exploited by an authenticated attacker who has the ability to set their own password. Successful exploitation of this vulnerability could result in unauthorized access to user accounts, bypassing security controls, or other malicious activities. This issue has been patched in version `2023-05a`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
INFO
Published Date :
June 7, 2023, 6:15 p.m.
Last Modified :
June 15, 2023, 3:31 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-34108
.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2023-34108
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-34108
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 15, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/mailcow/mailcow-dockerized/commit/f80940efdccd393bf5fccec2886795372a38c445 No Types Assigned https://github.com/mailcow/mailcow-dockerized/commit/f80940efdccd393bf5fccec2886795372a38c445 Patch Changed Reference Type https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-mhh4-qchc-pv22 No Types Assigned https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-mhh4-qchc-pv22 Vendor Advisory Changed Reference Type https://github.com/VladimirBorisov/CVE_proposal/blob/main/MailcowUserPassword.md No Types Assigned https://github.com/VladimirBorisov/CVE_proposal/blob/main/MailcowUserPassword.md Product Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:mailcow:mailcow\:_dockerized:*:*:*:*:*:*:*:* versions up to (including) 2023-05
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-34108
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-34108
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.04%
score
0.40575
percentile