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Incorrect Comparison, Permissive List of Allowed Inputs, and Privilege Context Switching Error in PostgreSQL

Critical severity Unreviewed Published Feb 15, 2022 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

A flaw was found in the psql interactive terminal of PostgreSQL in versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. If an interactive psql session uses \gset when querying a compromised server, the attacker can execute arbitrary code as the operating system account running psql. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

Published by the National Vulnerability Database Nov 23, 2020
Published to the GitHub Advisory Database Feb 15, 2022
Last updated Feb 1, 2023

Severity

Critical

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(50th percentile)

Weaknesses

Permissive List of Allowed Inputs

The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are explicitly allowed by policy because the inputs are assumed to be safe, but the list is too permissive - that is, it allows an input that is unsafe, leading to resultant weaknesses. Learn more on MITRE.

Privilege Context Switching Error

The product does not properly manage privileges while it is switching between different contexts that have different privileges or spheres of control. Learn more on MITRE.

Incorrect Comparison

The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses. Learn more on MITRE.

CVE ID

CVE-2020-25696

GHSA ID

GHSA-rfp5-6w27-jrq7

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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