CVE-2021-45105

Apache Log4j2 does not always protect from infinite recursion in lookup evaluation

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.

Scores

Weaknesses (CWE)

• CWE-20
• CWE-674

Advisories

• GHSA-p6xc-xr62-6r2g — Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion

European references

• ENISA EUVD · EUVD-2021-2559
• GCVE · GCVE-0-2021-45105

CERT-FR advisories

• CERTFR-2025-AVI-0855 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
• CERTFR-2025-AVI-0756 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
• CERTFR-2022-AVI-717 — Multiples vulnérabilités dans les produits Schneider · cert.ssi.gouv.fr
• CERTFR-2022-AVI-570 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2022-AVI-568 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2022-AVI-526 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2022-AVI-125 — Multiples vulnérabilités dans les produits SAP · cert.ssi.gouv.fr
• CERTFR-2022-AVI-1027 — Multiples vulnérabilités dans IBM Db2 · cert.ssi.gouv.fr
• CERTFR-2021-ALE-022 — [MaJ] Vulnérabilité dans Apache Log4j · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.0 < 2.3.1
• cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.4 < 2.12.3
• cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* ≥ 2.13.0 ≤ 2.16.0
• cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
• cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:* ≤ 10.0.12
• cpe:2.3:a:sonicwall:network_security_manager:*:*:*:*:on-premises:*:*:* ≥ 2.0 < 3.0
• cpe:2.3:a:sonicwall:network_security_manager:*:*:*:*:saas:*:*:* ≥ 2.0 < 3.0
• cpe:2.3:a:sonicwall:web_application_firewall:*:*:*:*:*:*:*:* ≥ 3.0.0 < 3.1.0
• cpe:2.3:o:sonicwall:6bk1602-0aa12-0tp0_firmware:*:*:*:*:*:*:*:* < 2.7.0
• cpe:2.3:o:sonicwall:6bk1602-0aa22-0tp0_firmware:*:*:*:*:*:*:*:* < 2.7.0
• cpe:2.3:o:sonicwall:6bk1602-0aa32-0tp0_firmware:*:*:*:*:*:*:*:* < 2.7.0
• cpe:2.3:o:sonicwall:6bk1602-0aa42-0tp0_firmware:*:*:*:*:*:*:*:* < 2.7.0
• cpe:2.3:o:sonicwall:6bk1602-0aa52-0tp0_firmware:*:*:*:*:*:*:*:* < 2.7.0
• cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:agile_plm_mcad_connector:3.6:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:autovue_for_agile_product_lifecycle_management:21.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_deposits_and_lines_of_credit_servicing:2.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_enterprise_default_management:2.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_enterprise_default_management:2.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_loans_servicing:2.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_party_management:2.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_payments:14.5:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_platform:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_platform:2.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_platform:2.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_trade_finance:14.5:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:banking_treasury_management:14.5:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:*
• cpe:2.3:a:oracle:communications_asap:7.3:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_console:1.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*
• +168 more

Affected products

References

• https://logging.apache.org/log4j/2.x/security.html
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
• https://www.kb.cert.org/vuls/id/930724
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
• http://www.openwall.com/lists/oss-security/2021/12/19/1
• https://www.debian.org/security/2021/dsa-5024
• https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
• https://security.netapp.com/advisory/ntap-20211218-0001/
• https://www.zerodayinitiative.com/advisories/ZDI-21-1541/
• https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.oracle.com/security-alerts/cpujul2022.html

Sources