GHSA-22mf-97vh-x8rw

Deserialization vulnerability exists in parso

Source: GitHub Advisory Database (reviewed) High CVE-2019-12760

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	parso	<= 0.4.0	no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

** 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."

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2019-12760 advisory
https://github.com/davidhalter/parso/issues/75 web
https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7 web
https://github.com/advisories/GHSA-22mf-97vh-x8rw advisory
https://github.com/davidhalter/parso package
https://github.com/pypa/advisory-database/tree/main/vulns/parso/PYSEC-2019-109.yaml web