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libpg_query memory leak

Moderate severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Nov 22, 2024

Package

pip pg-query (pip)

Affected versions

< 0.28

Patched versions

0.28
pip pglast (pip)
< 0.28
0.28

Description

An issue was discovered in libpg_query 10-1.0.2. There is a memory leak in pg_query_raw_parse in pg_query_parse.c, which might lead to a denial of service.

References

Published by the National Vulnerability Database Oct 18, 2018
Published to the GitHub Advisory Database May 13, 2022
Reviewed Nov 22, 2024
Last updated Nov 22, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS score

0.093%
(41st percentile)

Weaknesses

CVE ID

CVE-2018-18482

GHSA ID

GHSA-vm3q-58wm-2r2x

Source code

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