PYSEC-2021-27
Vulnerability from pysec - Published: 2021-04-12 21:15 - Updated: 2021-04-21 17:02
VLAI?
Details
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.
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": "1.28.0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.33.5",
"0.33.5.1",
"0.33.6rc1",
"0.33.6",
"0.33.7rc1",
"0.33.7rc2",
"0.33.7",
"0.33.8rc2",
"0.33.8",
"0.33.9",
"0.34.0rc1",
"0.34.0rc2",
"0.34.0",
"0.34.0.1",
"0.34.1.1",
"0.99.0rc1",
"0.99.0rc2",
"0.99.0rc3",
"0.99.0rc4",
"0.99.0",
"0.99.1rc1",
"0.99.1rc2",
"0.99.1",
"0.99.1.1",
"0.99.2rc1",
"0.99.2",
"0.99.3rc1",
"0.99.3",
"0.99.3.1",
"0.99.3.2",
"0.99.4rc1",
"0.99.4",
"0.99.5rc1",
"0.99.5",
"0.99.5.1",
"0.99.5.2",
"1.0.0rc1",
"1.0.0rc2",
"1.0.0rc3",
"1.0.0",
"1.1.0rc1",
"1.1.0rc2",
"1.1.0",
"1.2.0rc1",
"1.2.0rc2",
"1.2.0",
"1.2.1",
"1.3.0rc1",
"1.3.0",
"1.3.1",
"1.4.0rc1",
"1.4.0rc2",
"1.4.0",
"1.4.1rc1",
"1.4.1",
"1.5.0rc1",
"1.5.0rc2",
"1.5.0",
"1.5.1",
"1.6.0rc1",
"1.6.0rc2",
"1.6.0",
"1.6.1",
"1.7.0rc1",
"1.7.0rc2",
"1.7.0",
"1.7.1",
"1.7.2",
"1.7.3",
"1.8.0rc1",
"1.8.0",
"1.9.0.dev1",
"1.9.0.dev2",
"1.9.0rc1",
"1.9.0",
"1.9.1",
"1.10.0rc1",
"1.10.0rc2",
"1.10.0rc3",
"1.10.0rc5",
"1.10.0",
"1.10.1",
"1.11.0rc1",
"1.11.0",
"1.11.1",
"1.12.0rc1",
"1.12.0",
"1.12.1rc1",
"1.12.1",
"1.12.2",
"1.12.3",
"1.12.4rc1",
"1.12.4",
"1.13.0rc1",
"1.13.0rc2",
"1.13.0rc3",
"1.13.0",
"1.14.0rc1",
"1.14.0rc2",
"1.14.0",
"1.15.0rc1",
"1.15.0",
"1.15.1",
"1.15.2",
"1.16.0rc1",
"1.16.0rc2",
"1.16.0",
"1.16.1",
"1.17.0rc1",
"1.17.0",
"1.18.0rc1",
"1.18.0rc2",
"1.18.0",
"1.19.0rc1",
"1.19.0",
"1.19.1rc1",
"1.19.1",
"1.19.2",
"1.19.3",
"1.20.0rc1",
"1.20.0rc2",
"1.20.0rc3",
"1.20.0rc4",
"1.20.0rc5",
"1.20.0",
"1.20.1",
"1.21.0rc1",
"1.21.0rc2",
"1.21.0rc3",
"1.21.0",
"1.21.1",
"1.21.2",
"1.22.0rc1",
"1.22.0rc2",
"1.22.0",
"1.22.1",
"1.23.0rc1",
"1.23.0",
"1.23.1",
"1.24.0rc1",
"1.24.0rc2",
"1.24.0",
"1.25.0rc1",
"1.25.0",
"1.26.0rc1",
"1.26.0rc2",
"1.26.0",
"1.27.0rc1",
"1.27.0rc2",
"1.27.0",
"1.28.0rc1"
]
}
],
"aliases": [
"CVE-2021-21394",
"GHSA-w9fg-xffh-p362"
],
"details": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.",
"id": "PYSEC-2021-27",
"modified": "2021-04-21T17:02:00Z",
"published": "2021-04-12T21:15:00Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/9321"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/matrix-synapse/"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/9393"
},
{
"type": "ADVISORY",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-w9fg-xffh-p362"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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