// For flags

CVE-2021-44228

Apache Log4j2 Remote Code Execution Vulnerability

Severity Score

10
*CVSS v3.1

Exploit Likelihood

94.4%
*EPSS

Affected Versions

508
*CPE

Public Exploits

413
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

Act
*SSVC
Descriptions

Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.

Las características JNDI de Apache Log4j2 2.0-beta9 hasta 2.15.0 (excluyendo las versiones de seguridad 2.12.2, 2.12.3 y 2.3.1) utilizadas en la configuración, los mensajes de registro y los parámetros no protegen contra LDAP controlado por un atacante y otros puntos finales relacionados con JNDI. Un atacante que pueda controlar los mensajes de registro o los parámetros de los mensajes de registro puede ejecutar código arbitrario cargado desde servidores LDAP cuando la sustitución de la búsqueda de mensajes está habilitada. A partir de la versión 2.15.0 de log4j, este comportamiento ha sido deshabilitado por defecto. A partir de la versión 2.16.0 (junto con las versiones 2.12.2, 2.12.3 y 2.3.1), esta funcionalidad se ha eliminado por completo. Tenga en cuenta que esta vulnerabilidad es específica de log4j-core y no afecta a log4net, log4cxx u otros proyectos de Apache Logging Services

A flaw was found in the Apache Log4j logging library in versions from 2.0.0 and before 2.15.0. A remote attacker who can control log messages or log message parameters, can execute arbitrary code on the server via JNDI LDAP endpoint.

Red Hat Process Automation Manager is an open source business process management suite that combines process management and decision service management and enables business and IT users to create, manage, validate, and deploy process applications and decision services. This release of Red Hat Process Automation Manager 7.12.0 serves as an update to Red Hat Process Automation Manager 7.11.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include code execution, denial of service, deserialization, and traversal vulnerabilities.

Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

*Credits: This issue was discovered by Chen Zhaojun of Alibaba Cloud Security Team.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Act
Exploitation
Active
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-11-26 CVE Reserved
  • 2021-12-10 CVE Published
  • 2021-12-10 Exploited in Wild
  • 2021-12-10 First Exploit
  • 2021-12-24 KEV Due Date
  • 2025-02-04 CVE Updated
  • 2025-03-18 EPSS Updated
CWE
  • CWE-20: Improper Input Validation
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-502: Deserialization of Untrusted Data
  • CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CAPEC
References (456)
Affected Vendors, Products, and Versions (508)