PYSEC-2021-25
Vulnerability from pysec - Published: 2021-04-12 22:15 - Updated: 2021-04-26 18:40
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 requests to user provided domains were not restricted to external IP addresses when transitional IPv6 addresses were used. Outbound requests to federation, identity servers, when calculating the key validity for third-party invite events, sending push notifications, and generating URL previews are affected. This could cause Synapse to make requests to internal infrastructure on dual-stack networks. See referenced GitHub security advisory for details and 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-2021-21392",
"GHSA-5wrh-4jwv-5w78"
],
"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 requests to user provided domains were not restricted to external IP addresses when transitional IPv6 addresses were used. Outbound requests to federation, identity servers, when calculating the key validity for third-party invite events, sending push notifications, and generating URL previews are affected. This could cause Synapse to make requests to internal infrastructure on dual-stack networks. See referenced GitHub security advisory for details and workarounds.",
"id": "PYSEC-2021-25",
"modified": "2021-04-26T18:40:00Z",
"published": "2021-04-12T22:15:00Z",
"references": [
{
"type": "PACKAGE",
"url": "https://pypi.org/project/matrix-synapse/"
},
{
"type": "ADVISORY",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-5wrh-4jwv-5w78"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/9240"
}
]
}
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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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