CVE Vulnerability

CVE-2022-39200

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.

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c Third Party Advisory
https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:matrix:dendrite:*:*:*:*:*:*:*:*
Information

Published : 2022-09-12 08:15

Updated : 2022-09-15 06:53

NVD link : CVE-2022-39200

Mitre link : CVE-2022-39200

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature