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CVE-2021-43816

CVE-2021-43816 · Improper Preservation of Permissions in containerd

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

containerd is an open source container runtime. On installations using SELinux, such as EL8 (CentOS, RHEL), Fedora, or SUSE MicroOS, with containerd since v1.5.0-beta.0 as the backing container runtime interface (CRI), an unprivileged pod scheduled to the node may bind mount, via hostPath volume, any privileged, regular file on disk for complete read/write access (sans delete). Such is achieved by placing the in-container location of the hostPath volume mount at either `/etc/hosts`, `/etc/hostname`, or `/etc/resolv.conf`. These locations are being relabeled indiscriminately to match the container process-label which effectively elevates permissions for savvy containers that would not normally be able to access privileged host files. This issue has been resolved in version 1.5.9. Users are advised to upgrade as soon as possible.

CVSS 8.0 · Alta · EPSS 1,7% · Corrección disponible

Publicación
Actualización

Pila tecnológica: system · containers

Productos y versiones afectados

  • containerd

    Versiones
    • >= 1.5.0, < 1.5.9: Afectada

    Sin corrección publicada

  • containerd Debian:12

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9~ds1-1

    Actualiza a 1.5.9~ds1-1

  • containerd Debian:13

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9~ds1-1

    Actualiza a 1.5.9~ds1-1

  • containerd Debian:14

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9~ds1-1

    Actualiza a 1.5.9~ds1-1

  • containerd Ubuntu:Pro:16.04:LTS

    Versiones
    • 0.2.1-0ubuntu4~16.04
    • 0.2.3-0ubuntu1~16.04
    • 0.2.5-0ubuntu1~16.04.1
    • 1.2.6-0ubuntu1~16.04.2
    • 1.2.6-0ubuntu1~16.04.3
    • 1.2.6-0ubuntu1~16.04.4
    • 1.2.6-0ubuntu1~16.04.5
    • 1.2.6-0ubuntu1~16.04.6
    • 1.2.6-0ubuntu1~16.04.6+esm1
    • 1.2.6-0ubuntu1~16.04.6+esm2
    • 1.2.6-0ubuntu1~16.04.6+esm4
    • 1.2.6-0ubuntu1~16.04.6+esm5
    • 1.2.6-0ubuntu1~16.04.6+esm6
    • 1.2.6-0ubuntu1~16.04.6+esm7
    Intervalos de versiones afectados
    • ECOSYSTEM: (−∞, +∞)

    Sin corrección publicada

  • containerd Ubuntu:18.04:LTS

    Versiones
    • 0.2.5-0ubuntu2
    • 1.2.6-0ubuntu1~18.04.1
    • 1.2.6-0ubuntu1~18.04.2
    • 1.3.3-0ubuntu1~18.04.1
    • 1.3.3-0ubuntu1~18.04.2
    • 1.3.3-0ubuntu1~18.04.3
    • 1.3.3-0ubuntu1~18.04.4
    • 1.4.4-0ubuntu1~18.04.2
    • 1.5.2-0ubuntu1~18.04.1
    • 1.5.2-0ubuntu1~18.04.2
    • 1.5.2-0ubuntu1~18.04.3
    • 1.5.5-0ubuntu3~18.04.1
    • 1.5.5-0ubuntu3~18.04.2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9-0ubuntu1~18.04.1

    Actualiza a 1.5.9-0ubuntu1~18.04.1

  • containerd Ubuntu:20.04:LTS

    Versiones
    • 1.2.10-0ubuntu1
    • 1.3.2-0ubuntu1
    • 1.3.3-0ubuntu1
    • 1.3.3-0ubuntu2
    • 1.3.3-0ubuntu2.1
    • 1.3.3-0ubuntu2.2
    • 1.3.3-0ubuntu2.3
    • 1.4.4-0ubuntu1~20.04.2
    • 1.5.2-0ubuntu1~20.04.1
    • 1.5.2-0ubuntu1~20.04.2
    • 1.5.2-0ubuntu1~20.04.3
    • 1.5.5-0ubuntu3~20.04.1
    • 1.5.5-0ubuntu3~20.04.2
    • 1.5.9-0ubuntu1~20.04.1
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9-0ubuntu1~20.04.4

    Actualiza a 1.5.9-0ubuntu1~20.04.4

  • containerd Ubuntu:22.04:LTS

    Versiones
    • 1.5.5-0ubuntu3
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1.5.9-0ubuntu1

    Actualiza a 1.5.9-0ubuntu1

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