USN-4940-1: PyYAML vulnerability
10 May 2021
PyYAML could be made to run programs if it opened a specially crafted YAML file.
Releases
Packages
- pyyaml - YAML parser and emitter for Python
Details
It was discovered that PyYAML incorrectly handled untrusted YAML files with
the FullLoader loader. A remote attacker could possibly use this issue to
execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10
Ubuntu 20.04
In general, a standard system update will make all the necessary changes.