CVE-2022-39335
Synapse Unvalidated Federation API Authorization Event Disclosure
Description
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. Homeserver administrators are advised to upgrade.
INFO
Published Date :
May 26, 2023, 2:15 p.m.
Last Modified :
June 11, 2023, 4:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
1.6
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-2022-39335.
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-2022-39335 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-39335 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 -
CVE Modified by [email protected]
Jun. 11, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/T2MBNMZAFY4RCZL2VGBGAPKGB4JUPZVS/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 02, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L Changed Reference Type https://github.com/matrix-org/synapse/issues/13288 No Types Assigned https://github.com/matrix-org/synapse/issues/13288 Issue Tracking Changed Reference Type https://github.com/matrix-org/synapse/pull/13823 No Types Assigned https://github.com/matrix-org/synapse/pull/13823 Patch Changed Reference Type https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwv No Types Assigned https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwv Mitigation, Vendor Advisory Added CWE NIST CWE-862 Added CPE Configuration OR *cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* versions up to (excluding) 1.69.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-39335 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-2022-39335
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
0.44802
percentile