SB20230820232 - Information disclosure in Synapse Matrix
Published: August 20, 2023
Security Bulletin ID
SB20230820232
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2022-39335)
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
Remediation
Install update from vendor's website.
References
- 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/