BIT-python-2022-42919

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/python/BIT-python-2022-42919.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-python-2022-42919
Aliases
Published
2024-03-06T11:05:06.167Z
Modified
2024-03-06T11:25:28.861Z
Summary
[none]
Details

Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstractsocketssupported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

References

Affected packages

Bitnami / python

Package

Name
python
Purl
pkg:bitnami/python

Severity

  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
3.7.3
Fixed
3.7.15
Introduced
3.8.3
Fixed
3.8.15
Introduced
3.9.0
Fixed
3.9.16
Introduced
3.10.0
Fixed
3.10.9