pysec-2023-199
Vulnerability from pysec
Published
2023-10-10 18:15
Modified
2023-10-17 22:26
Severity ?
Details
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin API.
Impacted products
| Name | purl | matrix-synapse | pkg:pypi/matrix-synapse |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "matrix-synapse",
"purl": "pkg:pypi/matrix-synapse"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.94.0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.33.5",
"0.33.5.1",
"0.33.6",
"0.33.6rc1",
"0.33.7",
"0.33.7rc1",
"0.33.7rc2",
"0.33.8",
"0.33.8rc2",
"0.33.9",
"0.34.0",
"0.34.0.1",
"0.34.0rc1",
"0.34.0rc2",
"0.34.1.1",
"0.99.0",
"0.99.0rc1",
"0.99.0rc2",
"0.99.0rc3",
"0.99.0rc4",
"0.99.1",
"0.99.1.1",
"0.99.1rc1",
"0.99.1rc2",
"0.99.2",
"0.99.2rc1",
"0.99.3",
"0.99.3.1",
"0.99.3.2",
"0.99.3rc1",
"0.99.4",
"0.99.4rc1",
"0.99.5",
"0.99.5.1",
"0.99.5.2",
"0.99.5rc1",
"1.0.0",
"1.0.0rc1",
"1.0.0rc2",
"1.0.0rc3",
"1.1.0",
"1.1.0rc1",
"1.1.0rc2",
"1.10.0",
"1.10.0rc1",
"1.10.0rc2",
"1.10.0rc3",
"1.10.0rc5",
"1.10.1",
"1.11.0",
"1.11.0rc1",
"1.11.1",
"1.12.0",
"1.12.0rc1",
"1.12.1",
"1.12.1rc1",
"1.12.2",
"1.12.3",
"1.12.4",
"1.12.4rc1",
"1.13.0",
"1.13.0rc1",
"1.13.0rc2",
"1.13.0rc3",
"1.14.0",
"1.14.0rc1",
"1.14.0rc2",
"1.15.0",
"1.15.0rc1",
"1.15.1",
"1.15.2",
"1.16.0",
"1.16.0rc1",
"1.16.0rc2",
"1.16.1",
"1.17.0",
"1.17.0rc1",
"1.18.0",
"1.18.0rc1",
"1.18.0rc2",
"1.19.0",
"1.19.0rc1",
"1.19.1",
"1.19.1rc1",
"1.19.2",
"1.19.3",
"1.2.0",
"1.2.0rc1",
"1.2.0rc2",
"1.2.1",
"1.20.0",
"1.20.0rc1",
"1.20.0rc2",
"1.20.0rc3",
"1.20.0rc4",
"1.20.0rc5",
"1.20.1",
"1.21.0",
"1.21.0rc1",
"1.21.0rc2",
"1.21.0rc3",
"1.21.1",
"1.21.2",
"1.22.0",
"1.22.0rc1",
"1.22.0rc2",
"1.22.1",
"1.23.0",
"1.23.0rc1",
"1.23.1",
"1.24.0",
"1.24.0rc1",
"1.24.0rc2",
"1.25.0",
"1.25.0rc1",
"1.26.0",
"1.26.0rc1",
"1.26.0rc2",
"1.27.0",
"1.27.0rc1",
"1.27.0rc2",
"1.28.0",
"1.28.0rc1",
"1.29.0",
"1.29.0rc1",
"1.3.0",
"1.3.0rc1",
"1.3.1",
"1.30.0",
"1.30.0rc1",
"1.30.1",
"1.31.0",
"1.31.0rc1",
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"1.32.0rc1",
"1.32.1",
"1.32.2",
"1.33.0",
"1.33.0rc1",
"1.33.0rc2",
"1.33.1",
"1.33.2",
"1.34.0",
"1.34.0rc1",
"1.35.0",
"1.35.0rc1",
"1.35.0rc2",
"1.35.0rc3",
"1.35.1",
"1.36.0",
"1.36.0rc1",
"1.36.0rc2",
"1.37.0",
"1.37.0rc1",
"1.37.1",
"1.37.1rc1",
"1.38.0",
"1.38.0rc1",
"1.38.0rc2",
"1.38.0rc3",
"1.38.1",
"1.39.0",
"1.39.0rc1",
"1.39.0rc2",
"1.39.0rc3",
"1.4.0",
"1.4.0rc1",
"1.4.0rc2",
"1.4.1",
"1.4.1rc1",
"1.40.0",
"1.40.0rc1",
"1.40.0rc2",
"1.40.0rc3",
"1.41.0",
"1.41.0rc1",
"1.41.1",
"1.42.0",
"1.42.0rc1",
"1.42.0rc2",
"1.43.0",
"1.43.0rc1",
"1.43.0rc2",
"1.44.0",
"1.44.0rc1",
"1.44.0rc2",
"1.44.0rc3",
"1.45.0",
"1.45.0rc1",
"1.45.0rc2",
"1.45.1",
"1.46.0",
"1.46.0rc1",
"1.47.0",
"1.47.0rc1",
"1.47.0rc2",
"1.47.0rc3",
"1.47.1",
"1.48.0",
"1.48.0rc1",
"1.49.0",
"1.49.0rc1",
"1.49.2",
"1.5.0",
"1.5.0rc1",
"1.5.0rc2",
"1.5.1",
"1.50.0",
"1.50.0rc1",
"1.50.0rc2",
"1.50.1",
"1.50.2",
"1.51.0",
"1.51.0rc1",
"1.51.0rc2",
"1.52.0",
"1.52.0rc1",
"1.53.0",
"1.53.0rc1",
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"1.85.0rc2",
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"1.85.2",
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"1.86.0rc2",
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"1.87.0rc1",
"1.88.0",
"1.88.0rc1",
"1.89.0",
"1.89.0rc1",
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"1.9.0.dev2",
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"1.9.1",
"1.90.0",
"1.90.0rc1",
"1.91.0",
"1.91.0rc1",
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"1.92.2",
"1.92.3",
"1.93.0",
"1.93.0rc1",
"1.94.0rc1"
]
}
],
"aliases": [
"CVE-2023-45129",
"GHSA-5chr-wjw5-3gq4"
],
"details": "Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin API.",
"id": "PYSEC-2023-199",
"modified": "2023-10-17T22:26:17.611846+00:00",
"published": "2023-10-10T18:15:00+00:00",
"references": [
{
"type": "WEB",
"url": "https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version"
},
{
"type": "FIX",
"url": "https://github.com/matrix-org/synapse/pull/16360"
},
{
"type": "ADVISORY",
"url": "https://github.com/matrix-org/synapse/pull/16360"
},
{
"type": "ADVISORY",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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