Information disclosure in Synapse - CVE-2022-39335
Published: August 20, 2023
Vulnerability identifier: #VU79748
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-39335
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Matrix.org
Affected software:
Synapse
Synapse
Detailed vulnerability description
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the Matrix Federation API. A remote homeservers can request the authorization events in a room
How to mitigate CVE-2022-39335
Install updates from vendor's website.
Sources
- https://github.com/matrix-org/synapse/issues/13288
- https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwv
- https://github.com/matrix-org/synapse/pull/13823
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T2MBNMZAFY4RCZL2VGBGAPKGB4JUPZVS/