UBUNTU-CVE-2021-3393

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Source
https://ubuntu.com/security/CVE-2021-3393
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3393.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3393
Upstream
Downstream
Related
Published
2021-02-12T00:00:00Z
Modified
2025-09-08T16:46:43Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

References

Affected packages

Ubuntu:20.04:LTS / postgresql-12

Package

Name
postgresql-12
Purl
pkg:deb/ubuntu/postgresql-12@12.6-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
12.6-0ubuntu0.20.04.1

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
12.5-0ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libecpg-compat3"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libecpg-dev"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libecpg6"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libpgtypes3"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libpq-dev"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "libpq5"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-client-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-doc-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-plperl-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-plpython3-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-pltcl-12"
        },
        {
            "binary_version": "12.6-0ubuntu0.20.04.1",
            "binary_name": "postgresql-server-dev-12"
        }
    ],
    "availability": "No subscription required"
}