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CVE-2022-29162

CVE-2022-29162 · Incorrect Default Permissions in runc

This page contains facts from public vulnerability sources. Check the original advisory before updating.

runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes `runc exec --cap` behavior such that the additional capabilities granted to the process being executed (as specified via `--cap` arguments) do not include inheritable capabilities. In addition, `runc spec` is changed to not set any inheritable capabilities in the created example OCI spec (`config.json`) file.

CVSS 5.9 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system · containers

Affected products and versions

  • runc

    Versions
    • < 1.1.2: Affected

    No fix published

  • runc Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.1.3+ds1-1

    Update to 1.1.3+ds1-1

  • runc Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.1.3+ds1-1

    Update to 1.1.3+ds1-1

  • runc Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.1.3+ds1-1

    Update to 1.1.3+ds1-1

  • runc Ubuntu:Pro:16.04:LTS

    Versions
    • 0.0.8+dfsg-2
    • 0.1.1-0ubuntu5~16.04
    • 1.0.0~rc1-0ubuntu1~16.04
    • 1.0.0~rc1-0ubuntu2~16.04.1
    • 1.0.0~rc1-0ubuntu2~16.04.1.1
    • 1.0.0~rc2-0ubuntu2~16.04.1
    • 1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1
    • 1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1
    • 1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.2
    • 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.3
    • 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4
    • 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm1
    • 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2
    Affected ranges
    • ECOSYSTEM: < 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4

    Update to 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4

Original sources

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