UBUNTU-CVE-2021-21392

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Source
https://ubuntu.com/security/CVE-2021-21392
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21392.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-21392
Related
Published
2021-04-12T22:15:00Z
Modified
2024-10-15T14:08:00Z
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

Ubuntu:Pro:18.04:LTS / matrix-synapse

Package

Name
matrix-synapse
Purl
pkg:deb/ubuntu/matrix-synapse?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.19.2+dfsg-6
0.24.0+dfsg-1
0.24.0+dfsg-1ubuntu0.1~esm1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / matrix-synapse

Package

Name
matrix-synapse
Purl
pkg:deb/ubuntu/matrix-synapse?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.3.0-1
1.4.0-1
1.5.0-1
1.5.1-1
1.6.0-1
1.6.1-1
1.7.0-2
1.7.1-1
1.7.2-1
1.7.3-1
1.8.0-1
1.9.0-1
1.9.1-1
1.10.0-1
1.10.0-2
1.11.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / matrix-synapse

Package

Name
matrix-synapse
Purl
pkg:deb/ubuntu/matrix-synapse?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.39.0-1
1.47.0-2
1.47.1-1
1.48.0-1
1.49.0-1
1.49.2-1
1.50.1-1
1.50.2-1
1.51.0-1
1.52.0-1
1.53.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}