CVE-2022-39200
Dendrite Matrix Signature Verification Bypass Vulnerability
Description
Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the `/get_missing_events` path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this endpoint. Note that this does not apply to events retrieved through other endpoints (e.g. `/event`, `/state`) as they have been correctly verified. Homeservers that have federation disabled are not vulnerable. The problem has been fixed in Dendrite 0.9.8. Users are advised to upgrade. There are no known workarounds for this issue.
INFO
Published Date :
Sept. 12, 2022, 8:15 p.m.
Last Modified :
Sept. 15, 2022, 6:53 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
3.9
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-2022-39200.
| URL | Resource |
|---|---|
| https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 | Patch Third Party Advisory |
| https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c | 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-2022-39200 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-39200 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]
Sep. 15, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 No Types Assigned https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 Patch, Third Party Advisory Changed Reference Type https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c No Types Assigned https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:matrix:dendrite:*:*:*:*:*:*:*:* versions up to (excluding) 0.9.8
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-39200 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-2022-39200
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24537
percentile