UBUNTU-CVE-2020-15133

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Source
https://ubuntu.com/security/CVE-2020-15133
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15133.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-15133
Related
Published
2020-07-31T18:15:00Z
Modified
2025-06-03T17:34:23Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The Faye::WebSocket::Client class uses the EM::Connection#start_tls method in EventMachine to implement the TLS handshake whenever a wss: URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any wss: connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading faye-websocket to v0.11.0 is recommended.

References

Affected packages

Ubuntu:Pro:20.04:LTS / ruby-faye-websocket

Package

Name
ruby-faye-websocket
Purl
pkg:deb/ubuntu/ruby-faye-websocket@0.10.7-1?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

0.*

0.10.7-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / ruby-faye-websocket

Package

Name
ruby-faye-websocket
Purl
pkg:deb/ubuntu/ruby-faye-websocket@0.11.0-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*

0.11.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / ruby-faye-websocket

Package

Name
ruby-faye-websocket
Purl
pkg:deb/ubuntu/ruby-faye-websocket@0.11.0-1?arch=source&distro=oracular

Affected ranges

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

Affected versions

0.*

0.11.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / ruby-faye-websocket

Package

Name
ruby-faye-websocket
Purl
pkg:deb/ubuntu/ruby-faye-websocket@0.11.0-1?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*

0.11.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / ruby-faye-websocket

Package

Name
ruby-faye-websocket
Purl
pkg:deb/ubuntu/ruby-faye-websocket@0.11.0-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

0.*

0.11.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}