critical
CVE-2021-44228
log4j-core: Remote code execution in Log4j 2.x when logs contain an attacker-controlled string value
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
GHSA10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, GHSA, Red Hat, Amazon. Rated lower by Ubuntu (high).
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | java-1.6.0-openjdk, java-1.6.0-openjdk-debuginfo, java-1.6.0-openjdk-demo and 17 more | 1:1.6.0.41-1.13.13.1.78.amzn1 and 2 more |
| amazon linux 2 | aws-kinesis-agent, java-1.7.0-openjdk, java-1.7.0-openjdk-accessibility and 31 more | 2.0.4-1.amzn2 and 4 more |
| amazon linux 2022 | log4j, log4j-jcl, log4j-slf4j | 2.17.2-1.amzn2022.0.3 |
| maven::GitHub Security Advisory Maven | com.guicedee.services:log4j-core, org.apache.logging.log4j:log4j-core, org.ops4j.pax.logging:pax-logging-log4j2 and 2 more | 2.15.0, 2.3.1, 2.12.2 and 1 more |
| Red Hat | opendaylight | no fix listed |
| debian 10 | apache-log4j2 | 2.15.0-1~deb10u1 |
| debian 11 | apache-log4j2 | 2.15.0-1~deb11u1 |
| debian 12 | apache-log4j2 | 2.15.0-1 |
| debian 13 | apache-log4j2 | 2.15.0-1 |
| debian 14 | apache-log4j2 | 2.15.0-1 |
| debian 9 | apache-log4j2 | 2.7-2+deb9u1 |
| echo | apache-log4j2 | 2.15.0-1 |
Show all 77 entries from 19 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | java-1.6.0-openjdk | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.6.0-openjdk-debuginfo | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.6.0-openjdk-demo | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.6.0-openjdk-devel | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.6.0-openjdk-javadoc | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.6.0-openjdk-src | 1:1.6.0.41-1.13.13.1.78.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk-debuginfo | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk-demo | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk-devel | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk-javadoc | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.7.0-openjdk-src | 1:1.7.0.261-2.6.22.1.84.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-debuginfo | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-demo | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-devel | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-headless | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-javadoc | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-javadoc-zip | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 1 | java-1.8.0-openjdk-src | 1:1.8.0.312.b07-0.66.amzn1 |
| amazon linux 2 | aws-kinesis-agent | 2.0.4-1.amzn2 |
| amazon linux 2 | java-1.7.0-openjdk | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-accessibility | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-debuginfo | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-demo | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-devel | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-headless | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-javadoc | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.7.0-openjdk-src | 1:1.7.0.261-2.6.22.2.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-accessibility | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-accessibility-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-debuginfo | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-demo | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-demo-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-devel | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-devel-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-headless | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-headless-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-javadoc | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-javadoc-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-javadoc-zip | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-javadoc-zip-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-src | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-1.8.0-openjdk-src-debug | 1:1.8.0.312.b07-1.amzn2.0.2 |
| amazon linux 2 | java-11-amazon-corretto | 1:11.0.13+8-2.amzn2 |
| amazon linux 2 | java-11-amazon-corretto-headless | 1:11.0.13+8-2.amzn2 |
| amazon linux 2 | java-11-amazon-corretto-javadoc | 1:11.0.13+8-2.amzn2 |
| amazon linux 2 | java-17-amazon-corretto | 1:17.0.1+12-3.amzn2.1 |
| amazon linux 2 | java-17-amazon-corretto-devel | 1:17.0.1+12-3.amzn2.1 |
| amazon linux 2 | java-17-amazon-corretto-headless | 1:17.0.1+12-3.amzn2.1 |
| amazon linux 2 | java-17-amazon-corretto-javadoc | 1:17.0.1+12-3.amzn2.1 |
| amazon linux 2 | java-17-amazon-corretto-jmods | 1:17.0.1+12-3.amzn2.1 |
| amazon linux 2022 | log4j | 2.17.2-1.amzn2022.0.3 |
| amazon linux 2022 | log4j-jcl | 2.17.2-1.amzn2022.0.3 |
| amazon linux 2022 | log4j-slf4j | 2.17.2-1.amzn2022.0.3 |
| maven::GitHub Security Advisory Maven | com.guicedee.services:log4j-core | no fix listed |
| maven::GitHub Security Advisory Maven | org.apache.logging.log4j:log4j-core | 2.15.0, 2.3.1, 2.12.2 |
| maven::GitHub Security Advisory Maven | org.ops4j.pax.logging:pax-logging-log4j2 | 1.9.2, 1.10.8, 1.11.10, 2.0.11 |
| maven::GitHub Security Advisory Maven | org.xbib.elasticsearch:log4j | no fix listed |
| maven::GitHub Security Advisory Maven | uk.co.nichesolutions.logging.log4j:log4j-core | no fix listed |
| Red Hat | opendaylight | no fix listed |
| debian 10 | apache-log4j2 | 2.15.0-1~deb10u1 |
| debian 11 | apache-log4j2 | 2.15.0-1~deb11u1 |
| debian 12 | apache-log4j2 | 2.15.0-1 |
| debian 13 | apache-log4j2 | 2.15.0-1 |
| debian 14 | apache-log4j2 | 2.15.0-1 |
| debian 9 | apache-log4j2 | 2.7-2+deb9u1 |
| echo | apache-log4j2 | 2.15.0-1 |
| ubuntu 16.04-ESM | apache-log4j2 | 2.4-2ubuntu0.1~esm1 |
| ubuntu 18.04 | apache-log4j2 | 2.10.0-2ubuntu0.1 |
| ubuntu 18.04-ESM | apache-log4j2 | 2.10.0-2ubuntu0.1 |
| ubuntu 20.04 | apache-log4j2 | 2.15.0-0.20.04.1 |
| ubuntu 20.04-ESM | apache-log4j2 | 2.15.0-0.20.04.1 |
| ubuntu 21.04 | apache-log4j2 | 2.15.0-0.21.04.1 |
| ubuntu 21.10 | apache-log4j2 | 2.15.0-0.21.10.1 |
References
- http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html
- http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html
- http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html
- http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html
- http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html
All 87 references
- http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html
- http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html
- http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html
- 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
- 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
- http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html
- http://seclists.org/fulldisclosure/2022/Dec/2
- http://seclists.org/fulldisclosure/2022/Jul/11
- http://seclists.org/fulldisclosure/2022/Mar/23
- http://www.openwall.com/lists/oss-security/2021/12/10/1
- http://www.openwall.com/lists/oss-security/2021/12/10/2
- http://www.openwall.com/lists/oss-security/2021/12/10/3
- http://www.openwall.com/lists/oss-security/2021/12/13/1
- http://www.openwall.com/lists/oss-security/2021/12/13/2
- http://www.openwall.com/lists/oss-security/2021/12/14/4
- http://www.openwall.com/lists/oss-security/2021/12/15/3
- https://access.redhat.com/security/cve/CVE-2021-44228
- https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf
- https://github.com/advisories/GHSA-7rjr-3q55-vv33
- https://github.com/advisories/GHSA-jfh8-c2jp-5v3q
- https://github.com/apache/logging-log4j2
- https://github.com/apache/logging-log4j2/commit/c77b3cb39312b83b053d23a2158b99ac7de44dd3
- https://github.com/apache/logging-log4j2/pull/608
- https://github.com/cisagov/log4j-affected-db
- https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md
- https://github.com/github/advisory-database/pull/5501
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228
- https://github.com/tangxiaofeng7/apache-log4j-poc
- https://issues.apache.org/jira/browse/LOG4J2-3198
- https://issues.apache.org/jira/browse/LOG4J2-3201
- https://issues.apache.org/jira/browse/LOG4J2-3214
- https://issues.apache.org/jira/browse/LOG4J2-3221
- https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/
- https://logging.apache.org/log4j/2.x/changes-report.html#a2.15.0
- https://logging.apache.org/log4j/2.x/manual/lookups.html#JndiLookup
- https://logging.apache.org/log4j/2.x/manual/migration.html
- https://logging.apache.org/log4j/2.x/security.html
- https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2
- https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/
- https://nvd.nist.gov/vuln/detail/CVE-2021-44228
- https://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html
- https://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html
- https://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html
- https://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://seclists.org/fulldisclosure/2022/Dec/2
- https://seclists.org/fulldisclosure/2022/Jul/11
- https://seclists.org/fulldisclosure/2022/Mar/23
- https://security.netapp.com/advisory/ntap-20211210-0007
- https://security.netapp.com/advisory/ntap-20211210-0007/
- https://support.apple.com/kb/HT213189
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://twitter.com/kurtseifried/status/1469345530182455296
- https://ubuntu.com/security/notices/USN-5192-1
- https://ubuntu.com/security/notices/USN-5192-2
- https://ubuntu.com/security/notices/USN-5197-1
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/Log4Shell
- https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44228
- https://www.cve.org/CVERecord?id=CVE-2021-44228
- https://www.debian.org/security/2021/dsa-5020
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html
- https://www.kb.cert.org/vuls/id/930724
- https://www.lunasec.io/docs/blog/log4j-zero-day/
- https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html
- https://www.oracle.com/security-alerts/alert-cve-2021-44228.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html