CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
47.7%
Cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver.
System administrators are encouraged to upgrade to Synapse 1.95.1 as soon as possible.
The federation_domain_whitelist
can be used to limit federation traffic with a homeserver.
github.com/matrix-org/synapse
github.com/matrix-org/synapse/commit/daec55e1fe120c564240c5386e77941372bf458f
github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575
github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-230.yaml
lists.fedoraproject.org/archives/list/[email protected]/message/2IDEEZMFJBDLTFHQUTZRJJNCOZGQ2ZVS
lists.fedoraproject.org/archives/list/[email protected]/message/VH3RNC5ZPQZ4OKPSL4E6BBJSZOQLGDEY
nvd.nist.gov/vuln/detail/CVE-2023-43796
security.gentoo.org/glsa/202401-12
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
47.7%