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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:195066
[Rus]
Version
1
Class
patch
ALTXid
413212
Language
English
Severity
High
Title
RHSA-2022:8493 -- python3.9 security update
Description
python: local privilege escalation via the multiprocessing forkserver start method.
Family
unix
Platform
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.0
Product
python3.9
Reference
VENDOR: RHSA-2022:8493
VENDOR: RHSA-2022:8493
Id:
RHSA-2022:8493
Reference:
https://access.redhat.com/errata/RHSA-2022:8493
CVE: CVE-2022-42919
CVE: CVE-2022-42919
Id:
CVE-2022-42919
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-42919
Comment
: 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.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 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References:
https://github.com/python/cpython/issues/97514 (MISC)
https://security.netapp.com/advisory/ntap-20221209-0006/ (CONFIRM)
https://github.com/python/cpython/issues/97514#issuecomment-1310277840 (MISC)
https://github.com/python/cpython/compare/v3.10.8...v3.10.9 (CONFIRM)
https://github.com/python/cpython/compare/v3.9.15...v3.9.16 (CONFIRM)
GLSA-202305-02 (GENTOO)
FEDORA-2022-1166a1df1e ()
FEDORA-2022-028c09eaa7 ()
FEDORA-2022-b17bf30e88 ()
FEDORA-2022-462f39dd2f ()
FEDORA-2022-a7cad6bd22 ()
FEDORA-2022-f44dd1bec2 ()
FEDORA-2023-af5206f71d ()
FEDORA-2023-097dd40685 ()
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