UBUNTU-CVE-2020-21469

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Source
https://ubuntu.com/security/CVE-2020-21469
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-21469.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-21469
Upstream
Published
2023-08-22T19:16:00Z
Modified
2025-09-08T16:46:16Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in PostgreSQL 12.2 allows attackers to cause a denial of service via repeatedly sending SIGHUP signals. NOTE: this is disputed by the vendor because untrusted users cannot send SIGHUP signals; they can only be sent by a PostgreSQL superuser, a user with pgreloadconf access, or a user with sufficient privileges at the OS level (the postgres account or the root account).

References

Affected packages

Ubuntu:20.04:LTS / postgresql-12

Package

Name
postgresql-12
Purl
pkg:deb/ubuntu/postgresql-12@12.5-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
12.5-0ubuntu0.20.04.1

Affected versions

12.*

12.0-1
12.1-1
12.1-2build1
12.2-1
12.2-1ubuntu2
12.2-4
12.4-0ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libecpg-compat3",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "libecpg-dev",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "libecpg6",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "libpgtypes3",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "libpq-dev",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "libpq5",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-client-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-doc-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-plperl-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-plpython3-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-pltcl-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "postgresql-server-dev-12",
            "binary_version": "12.5-0ubuntu0.20.04.1"
        }
    ]
}