CVE-2021-39164 - log back

CVE-2021-39164 edited at 31 Aug 2021 18:29:05
References
https://github.com/matrix-org/synapse/security/advisories/GHSA-3x4c-pq33-4w3q
- https://github.com/matrix-org/synapse/commit/cb35df940a828bc40b96daed997b5ad4c7842fd3
+ https://github.com/matrix-org/synapse/commit/52c7a51cfc568ed61d800df99dcca25dc3b5fe3e
CVE-2021-39164 edited at 31 Aug 2021 18:25:54
Severity
- Unknown
+ Medium
Remote
- Unknown
+ Remote
Type
- Unknown
+ Information disclosure
Description
+ In matrix-synapse versions 1.41.0 and prior, unauthorised users can access the membership (list of members, with their display names) of a room if they know the ID of the room. The vulnerability is limited to rooms with `shared` history visibility. Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room.
References
+ https://github.com/matrix-org/synapse/security/advisories/GHSA-3x4c-pq33-4w3q
+ https://github.com/matrix-org/synapse/commit/cb35df940a828bc40b96daed997b5ad4c7842fd3
Notes
CVE-2021-39164 created at 31 Aug 2021 18:24:10