CVE-2021-3393: postgresql
Vulnerability summary
CVE-2021-3393 is a medium (CVSS 4.3) vulnerability in postgresql. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 14 · Related 10Timeline
- 01-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.19%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
0.00 pp
From 1.19% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse11 products
- postgresql12&distro=SUSE Enterprise Storage 6< 12.6-3.21.4
- postgresql12&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 12.6-3.21.4
- postgresql12&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 12.6-3.21.4
- postgresql12&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 12.6-8.16.1
- postgresql12&distro=SUSE Linux Enterprise Module for Server Applications 15 SP2< 12.6-8.16.1
Alpine4 products
- postgresql≥ 12.0, < 11.11-r0 | ≥ 12.0, < 12.6-r0 | ≥ 12.0, < 13.2-r0
- postgresql13< 13.2-r0
- postgresql14< 13.2-r0
- postgresql15< 13.2-r0
Redhat2 products
Debian1 product
- postgresql-13< 13.2-1
Opensuse1 product
- postgresql12&distro=openSUSE Leap 15.2< 12.6-lp152.3.16.1
Postgresql1 product
- postgresql< 11.11 | ≥ 12.0, < 12.6 | ≥ 13.0, < 13.2
Ubuntu1 product
- postgresql-12< 12.6-0ubuntu0.20.04.1
7 vendors · 21 products