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.
Remediation
References
http://www.openwall.com/lists/oss-security/2021/12/14/4
http://www.openwall.com/lists/oss-security/2021/12/15/3
http://www.openwall.com/lists/oss-security/2021/12/18/1
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ/
https://logging.apache.org/log4j/2.x/security.html
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
https://security.gentoo.org/glsa/202310-16
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
https://www.cve.org/CVERecord?id=CVE-2021-44228
https://www.debian.org/security/2021/dsa-5022
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.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
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-45046
Related Vulnerabilities
CVE-2019-5432 Vulnerability in npm package mqtt-packet
CVE-2020-8910 Vulnerability in npm package google-closure-library
CVE-2019-5442 Vulnerability in maven package ro.pippo:pippo-jaxb
CVE-2015-6748 Vulnerability in maven package org.jsoup:jsoup
CVE-2022-25845 Vulnerability in maven package com.alibaba:fastjson