CVE-2021-3393

Partition constraint violation errors leak values of denied columns

A user having an UPDATE privilege on a partitioned table but lacking the SELECT privilege on some column may be able to acquire denied-column values from an error message. This is similar to CVE-2014-8161, but the conditions to exploit are more rare.

The PostgreSQL project thanks Heikki Linnakangas for reporting this problem.

Version Information

Affected Version Fixed In Fix Published
13 13.2 Feb. 11, 2021
12 12.6 Feb. 11, 2021
11 11.11 Feb. 11, 2021

For more information about PostgreSQL versioning, please visit the versioning page.

CVSS 3.0

Overall Score 3.1
Component core server
Vector AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Reporting Security Vulnerabilities

If you wish to report a new security vulnerability in PostgreSQL, please send an email to security@postgresql.org.

For reporting non-security bugs, please see the Report a Bug page.