Deserialization in Parso Project
CVE-2019-12760
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.016 (72.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Parso_project Parso
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-12760?
- CVE-2019-12760 is a low-severity vulnerability in Parso Project, classified under Deserialization of Untrusted Data. CVSS score: 3.3/10. Published 2019-06-06.
- How severe is CVE-2019-12760?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2019-12760 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.