CVE-2021-4104

CVE Details

Release Date:	2021-12-14
Impact:	None	What is this?

Description

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.

See more information about CVE-2021-4104 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (log4j)	ELSA-2022-9056	2022-01-26
Oracle Linux version 7 (log4j)	ELSA-2021-5206	2021-12-21
Oracle Linux version 8 (parfait)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (si-units)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (unit-api)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (uom-lib)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (uom-parent)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (uom-se)	ELSA-2022-0290	2022-01-27
Oracle Linux version 8 (uom-systems)	ELSA-2022-0290	2022-01-27