id: PYSEC-2019-131
details: typed_ast 1.3.0 and 1.3.1 has an ast_for_arguments out-of-bounds read. An
  attacker with the ability to cause a Python interpreter to parse Python source (but
  not necessarily execute it) may be able to crash the interpreter process. This could
  be a concern, for example, in a web-based service that parses (but does not execute)
  Python code. (This issue also affected certain Python 3.8.0-alpha prereleases.)
affected:
- package:
    name: typed-ast
    ecosystem: PyPI
    purl: pkg:pypi/typed-ast
  ranges:
  - type: GIT
    repo: https://github.com/python/typed_ast
    events:
    - introduced: '0'
    - fixed: 156afcb26c198e162504a57caddfe0acd9ed7dce
    - fixed: dc317ac9cff859aa84eeabe03fb5004982545b3b
  - type: GIT
    repo: https://github.com/python/cpython
    events:
    - introduced: '0'
    - fixed: dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c
    - fixed: a4d78362397fc3bced6ea80fbc7b5f4827aec55e
  - type: ECOSYSTEM
    events:
    - introduced: '0'
    - fixed: 1.3.2
  versions:
  - '0.5'
  - 0.5.1
  - 0.5.2
  - 0.5.3
  - 0.5.4
  - 0.5.5
  - 0.5.6
  - 0.6.0
  - 0.6.1
  - 0.6.2
  - 0.6.3
  - 1.0.0
  - 1.0.1
  - 1.0.2
  - 1.0.3
  - 1.0.4
  - 1.1.0
  - 1.1.1
  - 1.1.2
  - 1.2.0
  - 1.3.0
  - 1.3.1
references:
- type: FIX
  url: https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dce
- type: FIX
  url: https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3b
- type: FIX
  url: https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c
- type: FIX
  url: https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e
- type: WEB
  url: https://bugs.python.org/issue36495
- type: WEB
  url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LG5H4Q6LFVRX7SFXLBEJMNQFI4T5SCEA/
- type: ADVISORY
  url: https://github.com/advisories/GHSA-7xxv-wpxj-mx5v
aliases:
- CVE-2019-19275
- GHSA-7xxv-wpxj-mx5v
modified: '2020-03-14T02:15:00Z'
published: '2019-11-26T15:15:00Z'