UBUNTU-CVE-2021-44512

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Source
https://ubuntu.com/security/CVE-2021-44512
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44512.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-44512
Upstream
Published
2021-12-07T03:15:00Z
Modified
2025-09-08T16:47:25Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory.

References

Affected packages

Ubuntu:22.04:LTS / tmate-ssh-server

Package

Name
tmate-ssh-server
Purl
pkg:deb/ubuntu/tmate-ssh-server@2.3.0-49-g97d20249-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*

2.3.0-49-g97d20249-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0-49-g97d20249-1",
            "binary_name": "tmate-ssh-server"
        }
    ]
}

Ubuntu:24.04:LTS / tmate-ssh-server

Package

Name
tmate-ssh-server
Purl
pkg:deb/ubuntu/tmate-ssh-server@2.3.0-68-gd7334ee4-1build1?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*

2.3.0-68-gd7334ee4-1
2.3.0-68-gd7334ee4-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0-68-gd7334ee4-1build1",
            "binary_name": "tmate-ssh-server"
        }
    ]
}

Ubuntu:25.04 / tmate-ssh-server

Package

Name
tmate-ssh-server
Purl
pkg:deb/ubuntu/tmate-ssh-server@2.3.0-68-gd7334ee4-2?arch=source&distro=plucky

Affected ranges

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

Affected versions

2.*

2.3.0-68-gd7334ee4-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0-68-gd7334ee4-2",
            "binary_name": "tmate-ssh-server"
        }
    ]
}