CVE-2019-12760

Advisory

A deserialization vulnerability exists in the way parso 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. Version 0.5.1 adds a note about the use of pickle.
NOTE: This is disputed because "the cache directory is not under control of the attacker in any common configuration."

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://pypi.org/project/parso
• https://data.safetycli.com/changelogs/parso/
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12760
• https://github.com/davidhalter/parso/commit/19de3eb5ca1ae9e7994f8d72f83328d83538fd16