id: GO-2023-1623
modules:
    - module: github.com/crossplane/crossplane-runtime
      versions:
        - introduced: 0.6.0
          fixed: 0.16.1
        - introduced: 0.17.0
          fixed: 0.19.2
      vulnerable_at: 0.19.1
      packages:
        - package: github.com/crossplane/crossplane-runtime/pkg/fieldpath
          symbols:
            - Paved.SetValue
          derived_symbols:
            - Paved.MergeValue
            - Paved.SetBool
            - Paved.SetNumber
            - Paved.SetString
summary: Out-of-memory panic in github.com/crossplane/crossplane-runtime
description: |-
    An out of memory panic vulnerability exists in the crossplane-runtime libraries.

    Applications that use the Paved type's SetValue method with user-provided input
    that is not properly validated might use excessive amounts of memory and cause
    an out of memory panic.

    In the fieldpath package, the Paved.SetValue method sets a value on the Paved
    object according to the provided path, without any validation. This allows
    setting values in slices at any provided index, which grows the target array up
    to the requested index. The index is currently capped at max uint32
    (4294967295), a large value. If callers do not validate paths' indexes on their
    own, this could allow users to consume arbitrary amounts of memory.

    Applications that do not use the Paved type's SetValue method are not affected.

    Users unable to upgrade can work around this issue by parsing and validating the
    path before passing it to the SetValue method of the Paved type, constraining
    the index size as deemed appropriate.
cves:
    - CVE-2023-27483
ghsas:
    - GHSA-vfvj-3m3g-m532
credits:
    - Disclosed by Ada Logics in a fuzzing audit sponsored by CNCF.
references:
    - advisory: https://github.com/crossplane/crossplane-runtime/security/advisories/GHSA-vfvj-3m3g-m532
    - fix: https://github.com/crossplane/crossplane-runtime/commit/53508a9f4374604db140dd8ab2fa52276441e738