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CBL Mariner 2.0 Security Update: python3 (CVE-2022-42919)

high Nessus Plugin ID 172794

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of python3 installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-42919 advisory.

 - 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. (CVE-2022-42919)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2022-42919

Plugin Details

Severity: High

ID: 172794

File Name: mariner_python3_CVE-2022-42919.nasl

Version: 1.0

Type: local

Published: 3/20/2023

Updated: 3/20/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2022-42919

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:cbl-mariner:python3-libs, p-cpe:/a:microsoft:cbl-mariner:python3-test, x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:python3, p-cpe:/a:microsoft:cbl-mariner:python3-pip, p-cpe:/a:microsoft:cbl-mariner:python3-curses, p-cpe:/a:microsoft:cbl-mariner:python3-devel, p-cpe:/a:microsoft:cbl-mariner:python3-tools, p-cpe:/a:microsoft:cbl-mariner:python3-debuginfo, p-cpe:/a:microsoft:cbl-mariner:python3-setuptools

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CBLMariner/release, Host/CBLMariner/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/8/2022

Vulnerability Publication Date: 11/7/2022

Reference Information

CVE: CVE-2022-42919

IAVA: 2022-A-0467-S, 2023-A-0061-S