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CVE-2021-45046 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  9.0 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://www.openwall.com/lists/oss-security/2021/12/14/4 Mailing List  Mitigation  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/15/3 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2021/12/18/1 Mailing List  Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf Third Party Advisory 
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 Mitigation  Release Notes  Vendor Advisory 
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 Third Party Advisory 
https://security.gentoo.org/glsa/202310-16
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd Third Party Advisory 
https://www.cve.org/CVERecord?id=CVE-2021-44228 Not Applicable 
https://www.debian.org/security/2021/dsa-5022 Third Party Advisory 
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html Third Party Advisory 
https://www.kb.cert.org/vuls/id/930724 Third Party Advisory  US Government Resource 
https://www.oracle.com/security-alerts/alert-cve-2021-44228.html Third Party Advisory 
https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory 
https://www.oracle.com/security-alerts/cpujan2022.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Apache Log4j2 Deserialization of Untrusted Data Vulnerability 05/01/2023 05/22/2023 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression La cwe source acceptance level NIST   Provider acceptance level Apache Software Foundation  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

27 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-45046
NVD Published Date:
12/14/2021
NVD Last Modified:
10/26/2023
Source:
Apache Software Foundation