Deserialization of Untrusted Data Affecting parso package, versions <0.5.1-0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 Jun 2019
- disclosed6 Jun 2019
Introduced: 6 Jun 2019
CVE-2019-12760 (opens in a new tab)How to fix?
Upgrade Debian:unstable parso to version 0.5.1-0.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream parso package and not the parso package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.