UBUNTU-CVE-2021-40084

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Source
https://ubuntu.com/security/CVE-2021-40084
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40084.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-40084
Related
Published
2021-08-25T01:15:00Z
Modified
2025-06-03T17:35:56Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.

References

Affected packages

Ubuntu:Pro:20.04:LTS / opensysusers

Package

Name
opensysusers
Purl
pkg:deb/ubuntu/opensysusers@0.5.1-1?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

0.*

0.5.1-1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:22.04:LTS / opensysusers

Package

Name
opensysusers
Purl
pkg:deb/ubuntu/opensysusers@0.6-3?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*

0.6-2
0.6-3

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:24.10 / opensysusers

Package

Name
opensysusers
Purl
pkg:deb/ubuntu/opensysusers@0.7.3-2?arch=source&distro=oracular

Affected ranges

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

Affected versions

0.*

0.7.3-2

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:24.04:LTS / opensysusers

Package

Name
opensysusers
Purl
pkg:deb/ubuntu/opensysusers@0.7.3-2?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*

0.7.3-2

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:25.04 / opensysusers

Package

Name
opensysusers
Purl
pkg:deb/ubuntu/opensysusers@0.7.3-4.1?arch=source&distro=plucky

Affected ranges

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

Affected versions

0.*

0.7.3-2
0.7.3-4
0.7.3-4.1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}