QID 355453

Date Published: 2023-06-29

QID 355453: Amazon Linux Security Advisory for runc : ALAS2023-2023-231

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. (
( CVE-2022-29162)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 4.6 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-231 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355453

    CVE-2022-29162 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-231 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-231.html
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