Improper Access Control Affecting postgresql-server package, versions <0:9.6.20-1.module+el8.3.0+9604+f0f52296


Severity

Recommended
high

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.19% (58th percentile)

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  • Snyk ID SNYK-ORACLE8-POSTGRESQLSERVER-2561563
  • published 10 Apr 2022
  • disclosed 30 Jul 2019

How to fix?

Upgrade Oracle:8 postgresql-server to version 0:9.6.20-1.module+el8.3.0+9604+f0f52296 or higher.
This issue was patched in ELSA-2020-5619-1.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql-server package and not the postgresql-server package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A vulnerability was found in PostgreSQL versions 11.x up to excluding 11.3, 10.x up to excluding 10.8, 9.6.x up to, excluding 9.6.13, 9.5.x up to, excluding 9.5.17. PostgreSQL maintains column statistics for tables. Certain statistics, such as histograms and lists of most common values, contain values taken from the column. PostgreSQL does not evaluate row security policies before consulting those statistics during query planning; an attacker can exploit this to read the most common values of certain columns. Affected columns are those for which the attacker has SELECT privilege and for which, in an ordinary query, row-level security prunes the set of rows visible to the attacker.

CVSS Scores

version 3.1
Expand this section

NVD

4.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None