UBUNTU-CVE-2020-5211

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Source
https://ubuntu.com/security/CVE-2020-5211
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-5211.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-5211
Upstream
Published
2020-01-28T19:15:00Z
Modified
2025-10-24T04:48:17Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L CVSS Calculator
  • 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
  • Ubuntu - low
Summary
[none]
Details

In NetHack before 3.6.5, an invalid extended command in value for the AUTOCOMPLETE configuration file option can cause a buffer overflow resulting in a crash or remote code execution/privilege escalation. This vulnerability affects systems that have NetHack installed suid/sgid and shared systems that allow users to upload their own configuration files. Users should upgrade to NetHack 3.6.5.

References

Affected packages

Ubuntu:16.04:LTS / nethack

Package

Name
nethack
Purl
pkg:deb/ubuntu/nethack@3.4.3-15build1?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*

3.4.3-15
3.4.3-15build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.4.3-15build1",
            "binary_name": "nethack-common"
        },
        {
            "binary_version": "3.4.3-15build1",
            "binary_name": "nethack-console"
        },
        {
            "binary_version": "3.4.3-15build1",
            "binary_name": "nethack-lisp"
        },
        {
            "binary_version": "3.4.3-15build1",
            "binary_name": "nethack-x11"
        }
    ]
}

Ubuntu:18.04:LTS / nethack

Package

Name
nethack
Purl
pkg:deb/ubuntu/nethack@3.6.0-4?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*

3.6.0-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.0-4",
            "binary_name": "nethack-common"
        },
        {
            "binary_version": "3.6.0-4",
            "binary_name": "nethack-console"
        },
        {
            "binary_version": "3.6.0-4",
            "binary_name": "nethack-lisp"
        },
        {
            "binary_version": "3.6.0-4",
            "binary_name": "nethack-x11"
        }
    ]
}

Ubuntu:20.04:LTS / nethack

Package

Name
nethack
Purl
pkg:deb/ubuntu/nethack@3.6.1-1?arch=source&distro=focal

Affected ranges

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

Affected versions

3.*

3.6.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.1-1",
            "binary_name": "nethack-common"
        },
        {
            "binary_version": "3.6.1-1",
            "binary_name": "nethack-console"
        },
        {
            "binary_version": "3.6.1-1",
            "binary_name": "nethack-lisp"
        },
        {
            "binary_version": "3.6.1-1",
            "binary_name": "nethack-x11"
        }
    ]
}