Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Apache Software Foundation / Apache Log4jApache Log4j2 – 2.16.0
Exploits & PoCs
- nucleiApache Log4j2 - Remote Code Injectionby ImNightmaree
- nucleiApache Log4j2 - Remote Code Injectionby princechaddha
References
- VENDOR_ADVISORYhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/alert-cve-2021-44228.html
- CONFIRMhttps://www.cve.org/CVERecord?id=CVE-2021-44228
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2021/12/14/4
- MISChttps://logging.apache.org/log4j/2.x/security.html
- MISChttps://www.kb.cert.org/vuls/id/930724
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf
- MISChttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html
- VENDOR_ADVISORYhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2021/12/15/3
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf
- VENDOR_ADVISORYhttps://www.debian.org/security/2021/dsa-5022
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2021/12/18/1
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY/
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ/
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujan2022.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2022.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujul2022.html
- MISChttps://security.gentoo.org/glsa/202310-16