id: GO-2021-0087
modules:
    - module: github.com/opencontainers/runc
      versions:
        - fixed: 1.0.0-rc9.0.20200122160610-2fc03cc11c77
      vulnerable_at: 1.0.0-rc9.0.20191217094952-7496a9682535
      packages:
        - package: github.com/opencontainers/runc/libcontainer
          symbols:
            - mountToRootfs
          skip_fix: 'TODO: Revisit this reason. (Fix causes multiple errors (dependent fields/methods undefined)'
summary: Race condition in github.com/opencontainers/runc
description: |-
    A race while mounting volumes allows a possible symlink-exchange attack,
    allowing a user whom can start multiple containers with custom volume mount
    configurations to escape the container.
published: 2021-04-14T20:04:52Z
cves:
    - CVE-2019-19921
ghsas:
    - GHSA-fh74-hm69-rqjw
credits:
    - Leopold Schabel
references:
    - fix: https://github.com/opencontainers/runc/pull/2207
    - fix: https://github.com/opencontainers/runc/commit/2fc03cc11c775b7a8b2e48d7ee447cb9bef32ad0
    - web: https://github.com/opencontainers/runc/issues/2197