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Temporary Directory Hijacking Vulnerability in Keycloak

High severity GitHub Reviewed Published Mar 18, 2022 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.keycloak:keycloak-core (Maven)

Affected versions

< 13.0.0

Patched versions

13.0.0

Description

A flaw was found in keycloak. Directories can be created prior to the Java process creating them in the temporary directory, but with wider user permissions, allowing the attacker to have access to the contents that keycloak stores in this directory. The highest threat from this vulnerability is to data confidentiality and integrity.

References

Published by the National Vulnerability Database May 12, 2021
Reviewed May 17, 2021
Published to the GitHub Advisory Database Mar 18, 2022
Last updated Feb 1, 2023

Severity

High
7.3
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Weaknesses

CVE ID

CVE-2021-20202

GHSA ID

GHSA-6xp6-fmc8-pmmr

Source code

No known source code

Credits

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