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Vulnerabilidades / CVE-2021-21687

crítica

CVE-2021-21687

jenkins: FilePath#untar does not check permission to create symbolic links when unarchiving a symbolic link

Publicada Modificada CWE 862
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GHSA9.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Red Hat9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Bitnami9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, GHSA, Bitnami. Más baja según Red Hat (alta).

Descripción

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
bitnami::Bitnami Vulnerability Databasejenkins2.319.0
maven::GitHub Security Advisory Mavenorg.jenkins-ci.main:jenkins-core2.303.3, 2.319

Referencias

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.