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Deserialization of Untrusted Data in Apache Log4j

Critical severity GitHub Reviewed Published Jan 19, 2022 to the GitHub Advisory Database • Updated Oct 31, 2023

Package

maven log4j:log4j (Maven)

Affected versions

<= 1.2.17

Patched versions

None
maven org.zenframework.z8.dependencies.commons:log4j-1.2.17 (Maven)
<= 2.0
None

Description

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.

Users are advised to migrate from log4j:log4j to org.apache.logging.log4j:log4j for an updated version of the library.

References

Published by the National Vulnerability Database Jan 18, 2022
Published to the GitHub Advisory Database Jan 19, 2022
Reviewed Jun 20, 2022
Last updated Oct 31, 2023

Severity

Critical

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

1.196%
(86th percentile)

Weaknesses

CVE ID

CVE-2022-23307

GHSA ID

GHSA-f7vh-qwp3-x37m

Source code

No known source code

Credits

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