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CVE-2021-44228 Detail


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.


CVSS 4.0 Severity and Metrics:

NVD assessment not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html Exploit  Third Party Advisory  VDB Entry 
http://seclists.org/fulldisclosure/2022/Dec/2 Exploit  Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Jul/11 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Mar/23 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/10/1 Mailing List  Mitigation  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/10/2 Mailing List  Mitigation  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/10/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/13/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/13/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/14/4 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/15/3 Mailing List  Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf Third Party Advisory 
https://github.com/cisagov/log4j-affected-db Third Party Advisory 
https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md Product  US Government Resource 
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228 Exploit  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html Mailing List  Third Party Advisory 
https://logging.apache.org/log4j/2.x/security.html Release Notes  Vendor Advisory 
https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/ Patch  Third Party Advisory  Vendor Advisory 
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20211210-0007/ Vendor Advisory 
https://support.apple.com/kb/HT213189 Third Party Advisory 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd Third Party Advisory 
https://twitter.com/kurtseifried/status/1469345530182455296 Exploit  Third Party Advisory 
https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001 Third Party Advisory 
https://www.debian.org/security/2021/dsa-5020 Third Party Advisory 
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html Third Party Advisory 
https://www.kb.cert.org/vuls/id/930724 Third Party Advisory  US Government Resource 
https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html Exploit  Third Party Advisory 
https://www.oracle.com/security-alerts/alert-cve-2021-44228.html Third Party Advisory 
https://www.oracle.com/security-alerts/cpuapr2022.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpujan2022.html Patch  Third Party Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Apache Log4j2 Remote Code Execution Vulnerability 12/10/2021 12/24/2021 For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression La cwe source acceptance level NIST  
CWE-20 Improper Input Validation Provider acceptance level Apache Software Foundation  
CWE-502 Deserialization of Untrusted Data Provider acceptance level Apache Software Foundation  
CWE-400 Uncontrolled Resource Consumption Provider acceptance level Apache Software Foundation  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

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Quick Info

CVE Dictionary Entry:
NVD Published Date:
NVD Last Modified:
Apache Software Foundation