CVE-2021-44228
Vulnérabilité critique dans Apache Log4j2 (Apache Software Foundation)
CVSS 10.0 · Critique
EPSS 100.0%
Apache Software Foundation•Apache Log4j2•Versions : 2.0-beta9, <log4j-core*
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.
Gravité et risque d'exploitation
CVE-2021-44228 obtient un score CVSS de 10.0/10, soit une gravité critique. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 100.00 %, ce qui la place devant 100.0 % des CVE référencées.
Que faire ?
- Vérifiez si Apache Log4j2 (versions 2.0-beta9, <log4j-core*) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://logging.apache.org/log4j/2.x/security.html
- http://www.openwall.com/lists/oss-security/2021/12/10/1
- http://www.openwall.com/lists/oss-security/2021/12/10/2
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- http://www.openwall.com/lists/oss-security/2021/12/10/3
- 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
- https://www.debian.org/security/2021/dsa-5020
- https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/
- https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/
- http://www.openwall.com/lists/oss-security/2021/12/13/2
- http://www.openwall.com/lists/oss-security/2021/12/13/1
- http://www.openwall.com/lists/oss-security/2021/12/14/4
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://www.kb.cert.org/vuls/id/930724
- 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
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- http://www.openwall.com/lists/oss-security/2021/12/15/3
- 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
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB/
- 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
- http://seclists.org/fulldisclosure/2022/Mar/23
- 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
- http://seclists.org/fulldisclosure/2022/Jul/11
- 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://seclists.org/fulldisclosure/2022/Dec/2
- http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html