CVE-2023-23943
Nextcloud Mail Internal Service Discovery Information Disclosure Vulnerability
Description
Nextcloud mail is an email app for the nextcloud home server platform. In affected versions the SMTP, IMAP and Sieve host fields allowed to scan for internal services and servers reachable from within the local network of the Nextcloud Server. It is recommended that the Nextcloud Maill app is upgraded to 1.15.0 or 2.2.2. The only known workaround for this issue is to completely disable the nextcloud mail app.
INFO
Published Date :
Feb. 6, 2023, 9:15 p.m.
Last Modified :
Feb. 15, 2023, 4:11 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.1
Affected Products
The following products are affected by CVE-2023-23943
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2023-23943.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/mail/pull/7796 | Patch |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8gcx-r739-9pf6 | Vendor Advisory |
| https://hackerone.com/reports/1736390 | Exploit Third Party Advisory |
| https://hackerone.com/reports/1741525 | Exploit Third Party Advisory |
| https://hackerone.com/reports/1746582 | Exploit Third Party Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-23943 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-23943 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]
Feb. 15, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://github.com/nextcloud/mail/pull/7796 No Types Assigned https://github.com/nextcloud/mail/pull/7796 Patch Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8gcx-r739-9pf6 No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8gcx-r739-9pf6 Vendor Advisory Changed Reference Type https://hackerone.com/reports/1736390 No Types Assigned https://hackerone.com/reports/1736390 Exploit, Third Party Advisory Changed Reference Type https://hackerone.com/reports/1741525 No Types Assigned https://hackerone.com/reports/1741525 Exploit, Third Party Advisory Changed Reference Type https://hackerone.com/reports/1746582 No Types Assigned https://hackerone.com/reports/1746582 Exploit, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:* versions up to (excluding) 1.15.0 *cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:* versions from (including) 2.2.0 up to (excluding) 2.2.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-23943 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-2023-23943
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} 0.01%
score
0.44232
percentile