CVE-2023-43796

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Source
https://cve.org/CVERecord?id=CVE-2023-43796
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-43796.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-43796
Aliases
Downstream
Related
Published
2023-10-31T16:52:48.505Z
Modified
2026-04-12T04:24:50.485596Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Synapse vulnerable to leak of remote user device information
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43796.json",
    "cwe_ids": [
        "CWE-200"
    ]
}
References

Affected packages

Git / github.com/matrix-org/synapse

Affected ranges

Type
GIT
Repo
https://github.com/matrix-org/synapse
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a11511954a58975d2e5400257a0cecfd27413447
Fixed
daec55e1fe120c564240c5386e77941372bf458f
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.95.1"
        }
    ],
    "source": [
        "CPE_FIELD",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*"
}

Affected versions

Other
hhs-1
hhs-2
hhs-3
hhs-5
hhs-6
hhs-7
hhs-8
v0.*
v0.10.0
v0.10.0-r1
v0.10.0-r2
v0.11.0
v0.11.0-r1
v0.11.0-r2
v0.11.1
v0.12.0
v0.13.1
v0.13.2
v0.13.3
v0.14.0
v0.16.0
v0.16.1
v0.16.1-r1
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.18.0
v0.18.1
v0.18.2
v0.18.3
v0.18.4
v0.18.5
v0.2.0
v0.2.1
v0.2.1a
v0.2.2
v0.23.0-rc1
v0.23.0-rc2
v0.25.0-rc1
v0.28.0-rc1
v0.3.0
v0.3.3
v0.3.4
v0.32.0
v0.32.0rc1
v0.32.2
v0.4.1
v0.4.2
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.3a
v0.5.3b
v0.5.3c
v0.5.4
v0.5.4a
v0.6.0
v0.6.0a
v0.6.0b
v0.6.1
v0.6.1a
v0.6.1b
v0.6.1c
v0.6.1d
v0.6.1e
v0.6.1f
v0.7.0
v0.7.0a
v0.7.0b
v0.7.0c
v0.7.0d
v0.7.0e
v0.7.0f
v0.7.1
v0.7.1-r1
v0.7.1-r2
v0.7.1-r3
v0.7.1-r4
v0.8.0
v0.8.1
v0.8.1-r1
v0.8.1-r2
v0.8.1-r3
v0.8.1-r4
v0.9.0
v0.9.0-r1
v0.9.0-r2
v0.9.0-r3
v0.9.0-r4
v0.9.0-r5
v0.9.1
v0.9.2
v0.9.2-r1
v0.9.2-r2
v0.9.3
v0.99.1rc1
v0.99.2rc1
v0.99.4rc1
v0.99.5.1.dev0
v1.*
v1.1.0rc1
v1.1.0rc2
v1.10.0rc1
v1.11.0rc1
v1.12.0rc1
v1.14.0rc1
v1.15.0rc1
v1.16.0rc1
v1.17.0rc1
v1.18.0rc1
v1.23.0rc1
v1.24.0rc1
v1.27.0rc1
v1.29.0rc1
v1.3.0rc1
v1.30.0rc1
v1.31.0rc1
v1.32.0rc1
v1.34.0rc1
v1.35.0rc1
v1.36.0rc1
v1.4.0rc1
v1.40.0rc1
v1.49.0rc1
v1.5.0rc1
v1.52.0rc1
v1.6.0rc1
v1.62.0rc1
v1.63.0rc1
v1.75.0rc1
v1.76.0rc1
v1.78.0rc1
v1.79.0rc1
v1.8.0rc1
v1.81.0rc1
v1.84.0rc1
v1.87.0rc1
v1.88.0rc1
v1.9.0.dev1
v1.9.0.dev2
v1.9.0rc1
v1.90.0rc1
v1.94.0rc1
v1.95.0
v1.95.0rc1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-43796.json"