CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
- State
- Published
- Severity
- 10.0 Critical
- Published
- Dec 10, 2021
- Updated
- Oct 21, 2025
- Reserved
- Nov 26, 2021
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 10.0 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | CISA-ADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Apache Log4j2Apache Software Foundation |
|
References
- https://logging.apache.org/log4j/2.x/security.html
- [oss-security] 20211210 CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpointsmailing-list
- [oss-security] 20211210 Re: CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpointsmailing-list
- 20211210 Vulnerability in Apache Log4j Library Affecting Cisco Products: December 2021vendor-advisory
- [oss-security] 20211210 Re: CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpointsmailing-list
- https://security.netapp.com/advisory/ntap-20211210-0007/
- http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
- https://www.oracle.com/security-alerts/alert-cve-2021-44228.html
- DSA-5020vendor-advisory
- [debian-lts-announce] 20211212 [SECURITY] [DLA 2842-1] apache-log4j2 security updatemailing-list
- FEDORA-2021-f0f501d01fvendor-advisory
- Microsoft’s Response to CVE-2021-44228 Apache Log4j 2vendor-advisory
- [oss-security] 20211213 Re: CVE-2021-4104: Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2mailing-list
- [oss-security] 20211213 CVE-2021-4104: Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2mailing-list
- [oss-security] 20211214 CVE-2021-45046: Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attackmailing-list
- VU#930724third-party-advisory
- https://twitter.com/kurtseifried/status/1469345530182455296
- https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf
- http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html
- http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html
- [oss-security] 20211215 Re: CVE-2021-45046: Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attackmailing-list
- http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html
- http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html
- http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html
- http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html
- http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf
- FEDORA-2021-66d6c484f3vendor-advisory
- http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
- https://www.oracle.com/security-alerts/cpujan2022.html
- http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html
- https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md
- http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html
- 20220314 APPLE-SA-2022-03-14-7 Xcode 13.3mailing-list
- https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001
- https://github.com/cisagov/log4j-affected-db
- https://support.apple.com/kb/HT213189
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228
- https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html
- 20220721 Open-Xchange Security Advisory 2022-07-21mailing-list
- http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html
- http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html
- 20221208 Intel Data Center Manager <= 5.1 Local Privileges Escalationmailing-list
- http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44228government-resource
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