modules:
  - module: gopkg.in/yaml.v2
    versions:
      - fixed: 2.2.8
    vulnerable_at: 2.2.7
    packages:
      - package: gopkg.in/yaml.v2
        symbols:
          - yaml_parser_fetch_more_tokens
          - yaml_parser_save_simple_key
          - yaml_parser_remove_simple_key
          - yaml_parser_decrease_flow_level
          - yaml_parser_fetch_stream_start
          - yaml_parser_fetch_value
        derived_symbols:
          - Decoder.Decode
          - Unmarshal
          - UnmarshalStrict
  - module: github.com/go-yaml/yaml
    vulnerable_at: 2.1.0+incompatible
    packages:
      - package: github.com/go-yaml/yaml
        symbols:
          - yaml_parser_fetch_more_tokens
          - yaml_parser_save_simple_key
          - yaml_parser_remove_simple_key
          - yaml_parser_decrease_flow_level
          - yaml_parser_fetch_stream_start
          - yaml_parser_fetch_value
        derived_symbols:
          - Decoder.Decode
          - Unmarshal
          - UnmarshalStrict
description: |
    Due to unbounded aliasing, a crafted YAML file can cause consumption
    of significant system resources. If parsing user supplied input, this
    may be used as a denial of service vector.
published: 2021-04-14T20:04:52Z
cves:
  - CVE-2019-11254
ghsas:
  - GHSA-wxc4-f4m6-wwqv
references:
  - fix: https://github.com/go-yaml/yaml/pull/555
  - fix: https://github.com/go-yaml/yaml/commit/53403b58ad1b561927d19068c655246f2db79d48
  - web: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18496