~ / search / GHSA-6757-jp84-gxfx

GHSA-6757-jp84-gxfx

Improper Input Validation in PyYAML

Source: GitHub Advisory Database (reviewed) Critical CVE-2020-1747

Packages

EcosystemPackageAffectedFixed in
PyPI pyyaml >= 5.1b7, < 5.3.1 5.3.1

Details

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

A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.

References

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