CVE-2023-43796

Name
CVE-2023-43796
Description
Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, 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 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575
MISC https://github.com/matrix-org/synapse/commit/daec55e1fe120c564240c5386e77941372bf458f
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VH3RNC5ZPQZ4OKPSL4E6BBJSZOQLGDEY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2IDEEZMFJBDLTFHQUTZRJJNCOZGQ2ZVS/
security-advisories@github.com https://security.gentoo.org/glsa/202401-12

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* synapse >= None < 1.95.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
synapse 3.18-community 1.95.1-r0 6543 <6543@obermui.de> fixed