// For flags

CVE-2021-45046

Apache Log4j2 Deserialization of Untrusted Data Vulnerability

Severity Score

9.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

4
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.

Se descubrió que la corrección para abordar CVE-2021-44228 en Apache Log4j versiones 2.15.0 estaba incompleta en ciertas configuraciones no predeterminadas. Esto podría permitir a los atacantes con control sobre los datos de entrada de Thread Context Map (MDC) cuando la configuración de registro utiliza un Pattern Layout no predeterminado con un Context Lookup (por ejemplo, $${ctx:loginId}) o un Thread Context Map pattern (%X, %mdc, o %MDC) para elaborar datos de entrada maliciosos utilizando un patrón JNDI Lookup que resulta en una fuga de información y ejecución de código remoto en algunos entornos y ejecución de código local en todos los entornos. Log4j versiones 2.16.0 (Java 8) y 2.12.2 (Java 7) solucionan este problema eliminando el soporte para los patrones de búsqueda de mensajes y deshabilitando la funcionalidad JNDI por defecto

A flaw was found in the Apache Log4j logging library in versions from 2.0.0 and before 2.16.0. A remote attacker with control over Thread Context Map (MDC) input data could craft malicious input using a JNDI Lookup pattern resulting in remote code execution (RCE) in a limited number of environments.

Apache Log4j2 contains a deserialization of untrusted data vulnerability due to the incomplete fix of CVE-2021-44228, where the Thread Context Lookup Pattern is vulnerable to remote code execution in certain non-default configurations.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-12-14 CVE Reserved
  • 2021-12-14 CVE Published
  • 2021-12-15 First Exploit
  • 2023-05-01 Exploited in Wild
  • 2023-05-22 KEV Due Date
  • 2024-08-04 CVE Updated
  • 2024-11-19 EPSS Updated
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CAPEC
References (28)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
Sppa-t3000 Ses3000 Firmware
Search vendor "Siemens" for product "Sppa-t3000 Ses3000 Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
Sppa-t3000 Ses3000
Search vendor "Siemens" for product "Sppa-t3000 Ses3000"
--
Safe
Siemens
Search vendor "Siemens"
6bk1602-0aa12-0tp0 Firmware
Search vendor "Siemens" for product "6bk1602-0aa12-0tp0 Firmware"
< 2.7.0
Search vendor "Siemens" for product "6bk1602-0aa12-0tp0 Firmware" and version " < 2.7.0"
-
Affected
in Siemens
Search vendor "Siemens"
6bk1602-0aa12-0tp0
Search vendor "Siemens" for product "6bk1602-0aa12-0tp0"
--
Safe
Siemens
Search vendor "Siemens"
6bk1602-0aa22-0tp0 Firmware
Search vendor "Siemens" for product "6bk1602-0aa22-0tp0 Firmware"
< 2.7.0
Search vendor "Siemens" for product "6bk1602-0aa22-0tp0 Firmware" and version " < 2.7.0"
-
Affected
in Siemens
Search vendor "Siemens"
6bk1602-0aa22-0tp0
Search vendor "Siemens" for product "6bk1602-0aa22-0tp0"
--
Safe
Siemens
Search vendor "Siemens"
6bk1602-0aa32-0tp0 Firmware
Search vendor "Siemens" for product "6bk1602-0aa32-0tp0 Firmware"
< 2.7.0
Search vendor "Siemens" for product "6bk1602-0aa32-0tp0 Firmware" and version " < 2.7.0"
-
Affected
in Siemens
Search vendor "Siemens"
6bk1602-0aa32-0tp0
Search vendor "Siemens" for product "6bk1602-0aa32-0tp0"
--
Safe
Siemens
Search vendor "Siemens"
6bk1602-0aa42-0tp0 Firmware
Search vendor "Siemens" for product "6bk1602-0aa42-0tp0 Firmware"
< 2.7.0
Search vendor "Siemens" for product "6bk1602-0aa42-0tp0 Firmware" and version " < 2.7.0"
-
Affected
in Siemens
Search vendor "Siemens"
6bk1602-0aa42-0tp0
Search vendor "Siemens" for product "6bk1602-0aa42-0tp0"
--
Safe
Siemens
Search vendor "Siemens"
6bk1602-0aa52-0tp0 Firmware
Search vendor "Siemens" for product "6bk1602-0aa52-0tp0 Firmware"
< 2.7.0
Search vendor "Siemens" for product "6bk1602-0aa52-0tp0 Firmware" and version " < 2.7.0"
-
Affected
in Siemens
Search vendor "Siemens"
6bk1602-0aa52-0tp0
Search vendor "Siemens" for product "6bk1602-0aa52-0tp0"
--
Safe
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
>= 2.0.1 < 2.12.2
Search vendor "Apache" for product "Log4j" and version " >= 2.0.1 < 2.12.2"
-
Affected
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
>= 2.13.0 < 2.16.0
Search vendor "Apache" for product "Log4j" and version " >= 2.13.0 < 2.16.0"
-
Affected
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
2.0
Search vendor "Apache" for product "Log4j" and version "2.0"
-
Affected
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
2.0
Search vendor "Apache" for product "Log4j" and version "2.0"
beta9
Affected
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
2.0
Search vendor "Apache" for product "Log4j" and version "2.0"
rc1
Affected
Apache
Search vendor "Apache"
Log4j
Search vendor "Apache" for product "Log4j"
2.0
Search vendor "Apache" for product "Log4j" and version "2.0"
rc2
Affected
Intel
Search vendor "Intel"
Audio Development Kit
Search vendor "Intel" for product "Audio Development Kit"
--
Affected
Intel
Search vendor "Intel"
Computer Vision Annotation Tool
Search vendor "Intel" for product "Computer Vision Annotation Tool"
--
Affected
Intel
Search vendor "Intel"
Datacenter Manager
Search vendor "Intel" for product "Datacenter Manager"
--
Affected
Intel
Search vendor "Intel"
Genomics Kernel Library
Search vendor "Intel" for product "Genomics Kernel Library"
--
Affected
Intel
Search vendor "Intel"
Oneapi
Search vendor "Intel" for product "Oneapi"
-eclipse
Affected
Intel
Search vendor "Intel"
Secure Device Onboard
Search vendor "Intel" for product "Secure Device Onboard"
--
Affected
Intel
Search vendor "Intel"
Sensor Solution Firmware Development Kit
Search vendor "Intel" for product "Sensor Solution Firmware Development Kit"
--
Affected
Intel
Search vendor "Intel"
System Debugger
Search vendor "Intel" for product "System Debugger"
--
Affected
Intel
Search vendor "Intel"
System Studio
Search vendor "Intel" for product "System Studio"
--
Affected
Siemens
Search vendor "Siemens"
Captial
Search vendor "Siemens" for product "Captial"
< 2019.1
Search vendor "Siemens" for product "Captial" and version " < 2019.1"
-
Affected
Siemens
Search vendor "Siemens"
Captial
Search vendor "Siemens" for product "Captial"
2019.1
Search vendor "Siemens" for product "Captial" and version "2019.1"
-
Affected
Siemens
Search vendor "Siemens"
Captial
Search vendor "Siemens" for product "Captial"
2019.1
Search vendor "Siemens" for product "Captial" and version "2019.1"
sp1912
Affected
Siemens
Search vendor "Siemens"
Comos
Search vendor "Siemens" for product "Comos"
*-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Advanced Reports
Search vendor "Siemens" for product "Desigo Cc Advanced Reports"
4.0
Search vendor "Siemens" for product "Desigo Cc Advanced Reports" and version "4.0"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Advanced Reports
Search vendor "Siemens" for product "Desigo Cc Advanced Reports"
4.1
Search vendor "Siemens" for product "Desigo Cc Advanced Reports" and version "4.1"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Advanced Reports
Search vendor "Siemens" for product "Desigo Cc Advanced Reports"
4.2
Search vendor "Siemens" for product "Desigo Cc Advanced Reports" and version "4.2"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Advanced Reports
Search vendor "Siemens" for product "Desigo Cc Advanced Reports"
5.0
Search vendor "Siemens" for product "Desigo Cc Advanced Reports" and version "5.0"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Advanced Reports
Search vendor "Siemens" for product "Desigo Cc Advanced Reports"
5.1
Search vendor "Siemens" for product "Desigo Cc Advanced Reports" and version "5.1"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Info Center
Search vendor "Siemens" for product "Desigo Cc Info Center"
5.0
Search vendor "Siemens" for product "Desigo Cc Info Center" and version "5.0"
-
Affected
Siemens
Search vendor "Siemens"
Desigo Cc Info Center
Search vendor "Siemens" for product "Desigo Cc Info Center"
5.1
Search vendor "Siemens" for product "Desigo Cc Info Center" and version "5.1"
-
Affected
Siemens
Search vendor "Siemens"
E-car Operation Center
Search vendor "Siemens" for product "E-car Operation Center"
< 2021-12-13
Search vendor "Siemens" for product "E-car Operation Center" and version " < 2021-12-13"
-
Affected
Siemens
Search vendor "Siemens"
Energy Engage
Search vendor "Siemens" for product "Energy Engage"
3.1
Search vendor "Siemens" for product "Energy Engage" and version "3.1"
-
Affected
Siemens
Search vendor "Siemens"
Energyip
Search vendor "Siemens" for product "Energyip"
8.5
Search vendor "Siemens" for product "Energyip" and version "8.5"
-
Affected
Siemens
Search vendor "Siemens"
Energyip
Search vendor "Siemens" for product "Energyip"
8.6
Search vendor "Siemens" for product "Energyip" and version "8.6"
-
Affected
Siemens
Search vendor "Siemens"
Energyip
Search vendor "Siemens" for product "Energyip"
8.7
Search vendor "Siemens" for product "Energyip" and version "8.7"
-
Affected
Siemens
Search vendor "Siemens"
Energyip
Search vendor "Siemens" for product "Energyip"
9.0
Search vendor "Siemens" for product "Energyip" and version "9.0"
-
Affected
Siemens
Search vendor "Siemens"
Energyip Prepay
Search vendor "Siemens" for product "Energyip Prepay"
3.7
Search vendor "Siemens" for product "Energyip Prepay" and version "3.7"
-
Affected
Siemens
Search vendor "Siemens"
Energyip Prepay
Search vendor "Siemens" for product "Energyip Prepay"
3.8
Search vendor "Siemens" for product "Energyip Prepay" and version "3.8"
-
Affected
Siemens
Search vendor "Siemens"
Gma-manager
Search vendor "Siemens" for product "Gma-manager"
< 8.6.2j-398
Search vendor "Siemens" for product "Gma-manager" and version " < 8.6.2j-398"
-
Affected
Siemens
Search vendor "Siemens"
Head-end System Universal Device Integration System
Search vendor "Siemens" for product "Head-end System Universal Device Integration System"
*-
Affected
Siemens
Search vendor "Siemens"
Industrial Edge Management
Search vendor "Siemens" for product "Industrial Edge Management"
*-
Affected
Siemens
Search vendor "Siemens"
Industrial Edge Management Hub
Search vendor "Siemens" for product "Industrial Edge Management Hub"
< 2021-12-13
Search vendor "Siemens" for product "Industrial Edge Management Hub" and version " < 2021-12-13"
-
Affected
Siemens
Search vendor "Siemens"
Logo\! Soft Comfort
Search vendor "Siemens" for product "Logo\! Soft Comfort"
*-
Affected
Siemens
Search vendor "Siemens"
Mendix
Search vendor "Siemens" for product "Mendix"
*-
Affected
Siemens
Search vendor "Siemens"
Mindsphere
Search vendor "Siemens" for product "Mindsphere"
< 2021-12-11
Search vendor "Siemens" for product "Mindsphere" and version " < 2021-12-11"
-
Affected
Siemens
Search vendor "Siemens"
Navigator
Search vendor "Siemens" for product "Navigator"
< 2021-12-13
Search vendor "Siemens" for product "Navigator" and version " < 2021-12-13"
-
Affected
Siemens
Search vendor "Siemens"
Nx
Search vendor "Siemens" for product "Nx"
*-
Affected
Siemens
Search vendor "Siemens"
Opcenter Intelligence
Search vendor "Siemens" for product "Opcenter Intelligence"
<= 3.2
Search vendor "Siemens" for product "Opcenter Intelligence" and version " <= 3.2"
-
Affected
Siemens
Search vendor "Siemens"
Operation Scheduler
Search vendor "Siemens" for product "Operation Scheduler"
<= 1.1.3
Search vendor "Siemens" for product "Operation Scheduler" and version " <= 1.1.3"
-
Affected
Siemens
Search vendor "Siemens"
Sentron Powermanager
Search vendor "Siemens" for product "Sentron Powermanager"
4.1
Search vendor "Siemens" for product "Sentron Powermanager" and version "4.1"
-
Affected
Siemens
Search vendor "Siemens"
Sentron Powermanager
Search vendor "Siemens" for product "Sentron Powermanager"
4.2
Search vendor "Siemens" for product "Sentron Powermanager" and version "4.2"
-
Affected
Siemens
Search vendor "Siemens"
Siguard Dsa
Search vendor "Siemens" for product "Siguard Dsa"
4.2
Search vendor "Siemens" for product "Siguard Dsa" and version "4.2"
-
Affected
Siemens
Search vendor "Siemens"
Siguard Dsa
Search vendor "Siemens" for product "Siguard Dsa"
4.3
Search vendor "Siemens" for product "Siguard Dsa" and version "4.3"
-
Affected
Siemens
Search vendor "Siemens"
Siguard Dsa
Search vendor "Siemens" for product "Siguard Dsa"
4.4
Search vendor "Siemens" for product "Siguard Dsa" and version "4.4"
-
Affected
Siemens
Search vendor "Siemens"
Sipass Integrated
Search vendor "Siemens" for product "Sipass Integrated"
2.80
Search vendor "Siemens" for product "Sipass Integrated" and version "2.80"
-
Affected
Siemens
Search vendor "Siemens"
Sipass Integrated
Search vendor "Siemens" for product "Sipass Integrated"
2.85
Search vendor "Siemens" for product "Sipass Integrated" and version "2.85"
-
Affected
Siemens
Search vendor "Siemens"
Siveillance Command
Search vendor "Siemens" for product "Siveillance Command"
<= 4.16.2.1
Search vendor "Siemens" for product "Siveillance Command" and version " <= 4.16.2.1"
-
Affected
Siemens
Search vendor "Siemens"
Siveillance Control Pro
Search vendor "Siemens" for product "Siveillance Control Pro"
*-
Affected
Siemens
Search vendor "Siemens"
Siveillance Identity
Search vendor "Siemens" for product "Siveillance Identity"
1.5
Search vendor "Siemens" for product "Siveillance Identity" and version "1.5"
-
Affected
Siemens
Search vendor "Siemens"
Siveillance Identity
Search vendor "Siemens" for product "Siveillance Identity"
1.6
Search vendor "Siemens" for product "Siveillance Identity" and version "1.6"
-
Affected
Siemens
Search vendor "Siemens"
Siveillance Vantage
Search vendor "Siemens" for product "Siveillance Vantage"
*-
Affected
Siemens
Search vendor "Siemens"
Siveillance Viewpoint
Search vendor "Siemens" for product "Siveillance Viewpoint"
*-
Affected
Siemens
Search vendor "Siemens"
Solid Edge Cam Pro
Search vendor "Siemens" for product "Solid Edge Cam Pro"
*-
Affected
Siemens
Search vendor "Siemens"
Solid Edge Harness Design
Search vendor "Siemens" for product "Solid Edge Harness Design"
< 2020
Search vendor "Siemens" for product "Solid Edge Harness Design" and version " < 2020"
-
Affected
Siemens
Search vendor "Siemens"
Solid Edge Harness Design
Search vendor "Siemens" for product "Solid Edge Harness Design"
2020
Search vendor "Siemens" for product "Solid Edge Harness Design" and version "2020"
-
Affected
Siemens
Search vendor "Siemens"
Solid Edge Harness Design
Search vendor "Siemens" for product "Solid Edge Harness Design"
2020
Search vendor "Siemens" for product "Solid Edge Harness Design" and version "2020"
-
Affected
Siemens
Search vendor "Siemens"
Solid Edge Harness Design
Search vendor "Siemens" for product "Solid Edge Harness Design"
2020
Search vendor "Siemens" for product "Solid Edge Harness Design" and version "2020"
sp2002
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 4
Search vendor "Siemens" for product "Spectrum Power 4"
< 4.70
Search vendor "Siemens" for product "Spectrum Power 4" and version " < 4.70"
-
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 4
Search vendor "Siemens" for product "Spectrum Power 4"
4.70
Search vendor "Siemens" for product "Spectrum Power 4" and version "4.70"
-
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 4
Search vendor "Siemens" for product "Spectrum Power 4"
4.70
Search vendor "Siemens" for product "Spectrum Power 4" and version "4.70"
sp7
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 4
Search vendor "Siemens" for product "Spectrum Power 4"
4.70
Search vendor "Siemens" for product "Spectrum Power 4" and version "4.70"
sp8
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 7
Search vendor "Siemens" for product "Spectrum Power 7"
< 2.30
Search vendor "Siemens" for product "Spectrum Power 7" and version " < 2.30"
-
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 7
Search vendor "Siemens" for product "Spectrum Power 7"
2.30
Search vendor "Siemens" for product "Spectrum Power 7" and version "2.30"
-
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 7
Search vendor "Siemens" for product "Spectrum Power 7"
2.30
Search vendor "Siemens" for product "Spectrum Power 7" and version "2.30"
-
Affected
Siemens
Search vendor "Siemens"
Spectrum Power 7
Search vendor "Siemens" for product "Spectrum Power 7"
2.30
Search vendor "Siemens" for product "Spectrum Power 7" and version "2.30"
sp2
Affected
Siemens
Search vendor "Siemens"
Teamcenter
Search vendor "Siemens" for product "Teamcenter"
*-
Affected
Siemens
Search vendor "Siemens"
Tracealertserverplus
Search vendor "Siemens" for product "Tracealertserverplus"
*-
Affected
Siemens
Search vendor "Siemens"
Vesys
Search vendor "Siemens" for product "Vesys"
< 2019.1
Search vendor "Siemens" for product "Vesys" and version " < 2019.1"
-
Affected
Siemens
Search vendor "Siemens"
Vesys
Search vendor "Siemens" for product "Vesys"
2019.1
Search vendor "Siemens" for product "Vesys" and version "2019.1"
-
Affected
Siemens
Search vendor "Siemens"
Vesys
Search vendor "Siemens" for product "Vesys"
2019.1
Search vendor "Siemens" for product "Vesys" and version "2019.1"
-
Affected
Siemens
Search vendor "Siemens"
Vesys
Search vendor "Siemens" for product "Vesys"
2019.1
Search vendor "Siemens" for product "Vesys" and version "2019.1"
sp1912
Affected
Siemens
Search vendor "Siemens"
Xpedition Enterprise
Search vendor "Siemens" for product "Xpedition Enterprise"
--
Affected
Siemens
Search vendor "Siemens"
Xpedition Package Integrator
Search vendor "Siemens" for product "Xpedition Package Integrator"
--
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected
Sonicwall
Search vendor "Sonicwall"
Email Security
Search vendor "Sonicwall" for product "Email Security"
< 10.0.12
Search vendor "Sonicwall" for product "Email Security" and version " < 10.0.12"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected