id: PYSEC-2019-109
details: '** DISPUTED ** A deserialization vulnerability exists in the way parso through
  0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and,
  provided that an evil pickle can be written to a cache grammar file and that its
  parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This
  is disputed because "the cache directory is not under control of the attacker in
  any common configuration."'
affected:
- package:
    name: parso
    ecosystem: PyPI
    purl: pkg:pypi/parso
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: '0'
    - fixed: 0.5.0
  versions:
  - 0.0.1
  - 0.0.2
  - 0.0.3
  - 0.0.4
  - 0.1.0
  - 0.1.1
  - 0.2.0
  - 0.2.1
  - 0.3.0
  - 0.3.1
  - 0.3.2
  - 0.3.3
  - 0.3.4
  - 0.4.0
references:
- type: WEB
  url: https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7
- type: REPORT
  url: https://github.com/davidhalter/parso/issues/75
- type: ADVISORY
  url: https://github.com/advisories/GHSA-22mf-97vh-x8rw
aliases:
- CVE-2019-12760
- GHSA-22mf-97vh-x8rw
modified: '2019-07-05T11:15:00Z'
published: '2019-06-06T19:29:00Z'