UBUNTU-CVE-2021-44273

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Source
https://ubuntu.com/security/CVE-2021-44273
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44273.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-44273
Related
Published
2021-12-23T12:15:00Z
Modified
2025-04-23T15:00:30Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

e2guardian v5.4.x <= v5.4.3r is affected by missing SSL certificate validation in the SSL MITM engine. In standalone mode (i.e., acting as a proxy or a transparent proxy), with SSL MITM enabled, e2guardian, if built with OpenSSL v1.1.x, did not validate hostnames in certificates of the web servers that it connected to, and thus was itself vulnerable to MITM attacks.

References

Affected packages

Ubuntu:Pro:18.04:LTS / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@3.4.0.3-2?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

3.*

3.4.0.3-2

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@5.3.4-1?arch=source&distro=focal

Affected ranges

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

Affected versions

5.*

5.3.3-1
5.3.4-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@5.3.5-3?arch=source&distro=jammy

Affected ranges

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

Affected versions

5.*

5.3.4-2
5.3.5-1
5.3.5-2
5.3.5-2build1
5.3.5-3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@5.3.5-6ubuntu3?arch=source&distro=oracular

Affected ranges

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

Affected versions

5.*

5.3.5-6ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@5.3.5-6ubuntu3?arch=source&distro=noble

Affected ranges

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

Affected versions

5.*

5.3.5-4.1ubuntu1
5.3.5-6ubuntu1
5.3.5-6ubuntu2
5.3.5-6ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / e2guardian

Package

Name
e2guardian
Purl
pkg:deb/ubuntu/e2guardian@5.5.7-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

5.*

5.3.5-6ubuntu3
5.5.6-1
5.5.7-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}