CVE-2021-45046

CRITICALCISA KEV

9.0

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.

CVE Details

CVSS v3.1 Score9.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published12/14/2021

Last Modified10/27/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorApache

ProductLog4j2

Vulnerability NameApache Log4j2 Deserialization of Untrusted Data Vulnerability

KEV Date Added2023-05-01

Remediation Due Date2023-05-22

Ransomware UseKnown

Affected Products

apache:log4jcvat:computer_vision_annotation_tooldebian:debian_linuxfedoraproject:fedoraintel:audio_development_kitintel:datacenter_managerintel:genomics_kernel_libraryintel:oneapiintel:secure_device_onboardintel:sensor_solution_firmware_development_kitintel:system_debuggerintel:system_studiosiemens:6bk1602-0aa12-0tp0siemens:6bk1602-0aa12-0tp0_firmwaresiemens:6bk1602-0aa22-0tp0siemens:6bk1602-0aa22-0tp0_firmwaresiemens:6bk1602-0aa32-0tp0siemens:6bk1602-0aa32-0tp0_firmwaresiemens:6bk1602-0aa42-0tp0siemens:6bk1602-0aa42-0tp0_firmwaresiemens:6bk1602-0aa52-0tp0siemens:6bk1602-0aa52-0tp0_firmwaresiemens:captialsiemens:comossiemens:desigo_cc_advanced_reportssiemens:desigo_cc_info_centersiemens:e-car_operation_centersiemens:energy_engagesiemens:energyipsiemens:energyip_prepaysiemens:gma-managersiemens:head-end_system_universal_device_integration_systemsiemens:industrial_edge_managementsiemens:industrial_edge_management_hubsiemens:logo\!_soft_comfortsiemens:mendixsiemens:mindspheresiemens:navigatorsiemens:nxsiemens:opcenter_intelligencesiemens:operation_schedulersiemens:sentron_powermanagersiemens:siguard_dsasiemens:sipass_integratedsiemens:siveillance_commandsiemens:siveillance_control_prosiemens:siveillance_identitysiemens:siveillance_vantagesiemens:siveillance_viewpointsiemens:solid_edge_cam_prosiemens:solid_edge_harness_designsiemens:spectrum_power_4siemens:spectrum_power_7siemens:sppa-t3000_ses3000siemens:sppa-t3000_ses3000_firmwaresiemens:teamcentersiemens:tracealertserverplussiemens:vesyssiemens:xpedition_enterprisesiemens:xpedition_package_integratorsonicwall:email_security

Weaknesses (CWE)

CWE-917CWE-917

References

http://www.openwall.com/lists/oss-security/2021/12/14/4(security@apache.org)

http://www.openwall.com/lists/oss-security/2021/12/15/3(security@apache.org)

http://www.openwall.com/lists/oss-security/2021/12/18/1(security@apache.org)

https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf(security@apache.org)

https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf(security@apache.org)

https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf(security@apache.org)

https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf(security@apache.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY/(security@apache.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ/(security@apache.org)

https://logging.apache.org/log4j/2.x/security.html(security@apache.org)

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032(security@apache.org)

https://security.gentoo.org/glsa/202310-16(security@apache.org)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd(security@apache.org)

https://www.cve.org/CVERecord?id=CVE-2021-44228(security@apache.org)

https://www.debian.org/security/2021/dsa-5022(security@apache.org)

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html(security@apache.org)

https://www.kb.cert.org/vuls/id/930724(security@apache.org)

https://www.oracle.com/security-alerts/alert-cve-2021-44228.html(security@apache.org)

https://www.oracle.com/security-alerts/cpuapr2022.html(security@apache.org)

https://www.oracle.com/security-alerts/cpujan2022.html(security@apache.org)

https://www.oracle.com/security-alerts/cpujul2022.html(security@apache.org)

http://www.openwall.com/lists/oss-security/2021/12/14/4(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2021/12/15/3(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2021/12/18/1(af854a3a-2127-422b-91ae-364da2661108)

https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf(af854a3a-2127-422b-91ae-364da2661108)

https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf(af854a3a-2127-422b-91ae-364da2661108)

https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf(af854a3a-2127-422b-91ae-364da2661108)

https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY/(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ/(af854a3a-2127-422b-91ae-364da2661108)

https://logging.apache.org/log4j/2.x/security.html(af854a3a-2127-422b-91ae-364da2661108)

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/202310-16(af854a3a-2127-422b-91ae-364da2661108)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd(af854a3a-2127-422b-91ae-364da2661108)

https://www.cve.org/CVERecord?id=CVE-2021-44228(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2021/dsa-5022(af854a3a-2127-422b-91ae-364da2661108)

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.kb.cert.org/vuls/id/930724(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/alert-cve-2021-44228.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpuapr2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujan2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujul2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-45046(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.