UBUNTU-CVE-2021-28089

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Source
https://ubuntu.com/security/CVE-2021-28089
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28089.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-28089
Upstream
Downstream
Related
Published
2021-03-19T05:15:00Z
Modified
2025-07-18T16:46:43Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.

References

Affected packages

Ubuntu:Pro:16.04:LTS / tor

Package

Name
tor
Purl
pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.3+esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.2.9.14-1ubuntu1~16.04.3+esm1

Affected versions

0.*

0.2.6.10-1ubuntu2
0.2.7.6-1ubuntu1
0.2.9.11-1ubuntu1~16.04.1
0.2.9.14-1ubuntu1~16.04.1
0.2.9.14-1ubuntu1~16.04.2
0.2.9.14-1ubuntu1~16.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "tor",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
        },
        {
            "binary_name": "tor-dbg",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
        },
        {
            "binary_name": "tor-dbgsym",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
        },
        {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / tor

Package

Name
tor
Purl
pkg:deb/ubuntu/tor@0.3.2.10-1ubuntu0.2~esm2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.3.2.10-1ubuntu0.2~esm2

Affected versions

0.*

0.3.0.10-1
0.3.1.8-2
0.3.1.9-1
0.3.2.9-1
0.3.2.9-1build1
0.3.2.10-1
0.3.2.10-1ubuntu0.1
0.3.2.10-1ubuntu0.2~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "tor",
            "binary_version": "0.3.2.10-1ubuntu0.2~esm2"
        },
        {
            "binary_name": "tor-dbgsym",
            "binary_version": "0.3.2.10-1ubuntu0.2~esm2"
        },
        {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.3.2.10-1ubuntu0.2~esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:20.04:LTS / tor

Package

Name
tor
Purl
pkg:deb/ubuntu/tor@0.4.2.7-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.4.2.7-1ubuntu0.1~esm1

Affected versions

0.*

0.4.1.5-1
0.4.1.5-1build1
0.4.1.6-1
0.4.2.5-1
0.4.2.6-1
0.4.2.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "tor",
            "binary_version": "0.4.2.7-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "tor-dbgsym",
            "binary_version": "0.4.2.7-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.4.2.7-1ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}