Bug 6515 - [Anolis OS 8] Bugfix for CVE-2022-42919
Summary: [Anolis OS 8] Bugfix for CVE-2022-42919
Status: NEW
Alias: None
Product: Anolis OS 8
Classification: Anolis OS
Component: BaseOS Packages (show other bugs) BaseOS Packages
Version: 8.6
Hardware: All Linux
: P2-High S2-major
Target Milestone: ---
Assignee: Jacob
QA Contact: shuming
URL:
Whiteboard:
Keywords: CVE
Depends on:
Blocks:
 
Reported: 2023-09-08 17:09 UTC by 小龙
Modified: 2023-09-08 17:09 UTC (History)
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Description 小龙 admin 2023-09-08 17:09:34 UTC 
Description:
Python 3.9.x and 3.10.x through 3.10.8 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.abstract_sockets_supported 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 3.8.4, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

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