Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) 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 and 2.12.3.
Affected packages
Only the org.apache.logging.log4j:log4j-core package is directly affected by this vulnerability. The org.apache.logging.log4j:log4j-api should be kept at the same version as the org.apache.logging.log4j:log4j-core package to ensure compatability if in use.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.logging.log4j:log4j-core | >= 2.4.0, < 2.12.3, >= 2.13.0, < 2.17.0, < 2.3.1 | 2.12.3, 2.17.0, 2.3.1 |
| Java / Kotlin (Maven) | org.ops4j.pax.logging:pax-logging-log4j2 | >= 1.8.0, < 1.9.2, >= 1.10.0, < 1.10.9, >= 1.11.0, < 1.11.12, >= 2.0.0, < 2.0.13 | 1.9.2, 1.10.9, 1.11.12, 2.0.13 |
Referencias
- https://nvd.nist.gov/vuln/detail/CVE-2021-45105
- https://www.zerodayinitiative.com/advisories/ZDI-21-1541
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.kb.cert.org/vuls/id/930724
- https://www.debian.org/security/2021/dsa-5024
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://security.netapp.com/advisory/ntap-20211218-0001
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
- https://logging.apache.org/log4j/2.x/security.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY
- https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
- http://www.openwall.com/lists/oss-security/2021/12/19/1
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H- Debilidad (CWE)
CWE-20, CWE-674- Plataforma
- Java / Kotlin (Maven)
- Paquete
org.apache.logging.log4j:log4j-core, org.ops4j.pax.logging:pax-logging-log4j2- Publicada
- 18.12.2021
- Actualizado
- 11.10.2026 12:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-p6xc-xr62-6r2g - CC BY 4.0
Historial de vulnerabilidades: org.apache.logging.log4j:log4j-core
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 11
- Primera → última
- 01.2020 04.2026
- Sin corrección
- 0
- Explotada en ataques
- 2
Distribución por gravedad
- Crítica 3
- Alta 2
- Media 5
- Baja 1
Divulgaciones por año
- 2020: 2
- 2021: 3
- 2022: 1
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 3
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Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion esta entrada
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