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.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	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
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

Configurations

Configuration 1 (hide)

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

History

21 Nov 2024, 07:17

Type	Values Removed	Values Added
References	~~() https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 - Patch, Third Party Advisory~~	() https://github.com/matrix-org/dendrite/commit/2792d0490f3771488bad346981b8c26479a872c3 - Patch, Third Party Advisory
References	~~() https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c - Third Party Advisory~~	() https://github.com/matrix-org/dendrite/security/advisories/GHSA-pfw4-xjgm-267c - Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~5.3~~	v2 : unknown v3 : 7.3

Information

Published : 2022-09-12 20:15

Updated : 2024-11-21 07:17

NVD link : CVE-2022-39200

Mitre link : CVE-2022-39200

CVE.ORG link : CVE-2022-39200

JSON object : View

Products Affected

matrix

dendrite

CWE

CWE-347

Improper Verification of Cryptographic Signature

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