CVE-2021-21392

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-21392

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21392.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2021-21392

Aliases

Related

UBUNTU-CVE-2021-21392

Published

2021-04-12T22:15:13Z

Modified

2024-10-16T17:49:28.047183Z

Severity

6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N CVSS Calculator

Summary

[none]

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.

References

Affected packages

Debian:13 / matrix-synapse

Package

Name: matrix-synapse
Purl: pkg:deb/debian/matrix-synapse?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.28.0-1

Affected versions

0.*

0.19.2+dfsg-3

0.19.2+dfsg-4

0.19.2+dfsg-5

0.19.2+dfsg-6

0.24.0+dfsg-1

0.27.2+dfsg-1

0.28.0+dfsg-1

0.28.0+dfsg-2

0.28.1+dfsg-1

0.29.1+dfsg-1

0.30.0+dfsg-1

0.31.0+dfsg-1

0.31.0+dfsg-2

0.31.1+dfsg-1

0.31.1+dfsg-2

0.31.2+dfsg-1

0.32.2+dfsg-1

0.33.0+dfsg-1

0.33.1+dfsg-1

0.33.2+dfsg-1

0.33.2+dfsg-2

0.33.2+dfsg-3

0.33.3-1

0.33.3-2

0.33.3.1-1

0.33.4-1~bpo9+1

0.33.4-1

0.33.8-1

0.33.9-2~bpo9+1

0.33.9-2

0.34.0~rc2-1

0.34.0-1

0.34.0-2

0.34.0-3~bpo9+1

0.34.0-3~bpo9+2

0.34.0-3

0.34.1.1-1

0.34.1.1-2~bpo9+1

0.34.1.1-2

0.34.1.1-3~bpo9+1

0.34.1.1-3~bpo9+2

0.34.1.1-3

0.34.1.1-4

0.99.0-1~bpo9+1

0.99.0-1~bpo9+2

0.99.0-1~bpo9+3

0.99.0-1

0.99.1.1-1

0.99.2-1~bpo9+1

0.99.2-1~bpo9+2

0.99.2-1

0.99.2-2

0.99.2-3

0.99.2-4

0.99.2-5~bpo9+1

0.99.2-5

0.99.2-6

0.99.3.2-1

0.99.5.1-1

0.99.5.2-1

1.*

1.0.0-1

1.0.0-2~bpo10+1

1.0.0-2

1.1.0-1

1.2.1-1~bpo10+1

1.2.1-1~bpo10+2

1.2.1-1

1.2.1-2

1.3.0-1~bpo10+1

1.3.0-1

1.4.0~rc1-1

1.4.0-1

1.5.0~rc1-1

1.5.0-1

1.5.1-1~bpo10+1

1.5.1-1

1.6.0-1

1.6.1-1~bpo10+1

1.6.1-1

1.7.0-1

1.7.0-2

1.7.1-1

1.7.2-1~bpo10+1

1.7.2-1

1.7.3-1~bpo10+1

1.7.3-1

1.8.0-1

1.9.0-1~bpo10+1

1.9.0-1

1.9.1-1~bpo10+1

1.9.1-1

1.10.0-1

1.10.0-2

1.11.0-1

1.11.1-1~bpo10+1

1.11.1-1

1.12.0-1~bpo10+1

1.12.0-1

1.12.3-1~bpo10+1

1.12.3-1

1.12.4-1~bpo10+1

1.12.4-1

1.13.0-1~bpo10+1

1.13.0-1

1.15.0-1

1.15.1-1~bpo10+1

1.15.1-1~bpo10+2

1.15.1-1

1.15.2-1

1.16.0-1

1.17.0-1~bpo10+1

1.17.0-1

1.18.0-1~bpo10+1

1.18.0-1

1.19.0-1~bpo10+1

1.19.0-1

1.19.1-1~bpo10+1

1.19.1-1~bpo10+2

1.19.1-1~bpo10+3

1.19.1-1

1.19.2-1

1.19.3-1

1.20.0-1

1.20.1-1~bpo10+1

1.20.1-1

1.21.1-1

1.21.2-1~bpo10+1

1.21.2-1

1.22.1-1~bpo10+1

1.22.1-1

1.22.1-2~bpo10+1

1.22.1-2

1.23.0-1~bpo10+1

1.23.0-1

1.24.0-1~bpo10+1

1.24.0-1

1.24.0-2

1.25.0-1~bpo10+1

1.25.0-1

1.25.0-2

1.26.0-1~bpo10+1

1.26.0-1~bpo10+2

1.26.0-1~bpo10+3

1.26.0-1

1.26.0-2

1.26.0-3

1.27.0-1~bpo10+1

1.27.0-1~bpo10+2

1.27.0-1~bpo10+3

1.27.0-1

1.28.0-1~bpo10+1

1.28.0-1~bpo10+2

Ecosystem specific

{
    "urgency": "not yet assigned"
}