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CVE-2021-45105 Detail

Current Description

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2021/12/19/1 Mailing List  Mitigation  Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf Third Party Advisory 
https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf Third Party Advisory 
https://logging.apache.org/log4j/2.x/security.html Release Notes  Vendor Advisory 
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20211218-0001/ Third Party Advisory 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd Third Party Advisory 
https://www.debian.org/security/2021/dsa-5024 Third Party Advisory 
https://www.kb.cert.org/vuls/id/930724 Third Party Advisory  US Government Resource 
https://www.oracle.com/security-alerts/cpuapr2022.html Patch  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 
https://www.zerodayinitiative.com/advisories/ZDI-21-1541/ Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-674 Uncontrolled Recursion cwe source acceptance level NIST   Contributor acceptance level Apache Software Foundation  
CWE-20 Improper Input Validation cwe source acceptance level NIST   Contributor acceptance level Apache Software Foundation  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-45105
NVD Published Date:
12/18/2021
NVD Last Modified:
10/06/2022
Source:
Apache Software Foundation