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.

CVSS v3.1

3.3 LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS v3.0

7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

6.0 MEDIUMAV:N/AC:M/Au:S/C:P/I:P/A:P

EPSS

1.56% chance of exploitation in the next 30 days, 74th percentile

Published

2019-06-06

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7

References

• CVE Record
• NVD entry

Related

• CVE-2019-12758
• CVE-2019-12761
• CVE-2019-12750
• CVE-2019-12765
• CVE-2019-12745
• CVE-2019-12771