Oracle Linux 8 : python38:3.8 / and / python38-devel:3.8 (ELSA-2021-4162)

high Nessus Plugin ID 155969

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-4162 advisory.

- The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter. (CVE-2021-23336)

- psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system data into a Python object. (CVE-2019-18874)

- Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution. (CVE-2021-42771)

- A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote attacker could possibly use this issue to install a different revision on a repository. The highest threat from this vulnerability is to data integrity. This is fixed in python-pip version 21.1. (CVE-2021-3572)

- There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7. (CVE-2021-3426)

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 155969

File Name: oraclelinux_ELSA-2021-4162.nasl

Version: 1.9

Type: local

Agent: unix

Family: Oracle Linux Local Security Checks

Published: 12/10/2021

Updated: 9/23/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2021-29921

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.4

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2021-42771

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:python38-cffi, p-cpe:/a:oracle:linux:python38-requests, p-cpe:/a:oracle:linux:python38-cryptography, p-cpe:/a:oracle:linux:python38-pip-wheel, p-cpe:/a:oracle:linux:python38-py, p-cpe:/a:oracle:linux:python38-test, p-cpe:/a:oracle:linux:python38-mod_wsgi, p-cpe:/a:oracle:linux:python38-more-itertools, p-cpe:/a:oracle:linux:python38-setuptools, p-cpe:/a:oracle:linux:python38-devel, p-cpe:/a:oracle:linux:python38-pysocks, p-cpe:/a:oracle:linux:python38-pycparser, p-cpe:/a:oracle:linux:python38-psycopg2-tests, p-cpe:/a:oracle:linux:python38-packaging, p-cpe:/a:oracle:linux:python38, p-cpe:/a:oracle:linux:python38-idle, p-cpe:/a:oracle:linux:python38-asn1crypto, p-cpe:/a:oracle:linux:python38-pymysql, p-cpe:/a:oracle:linux:python38-debug, p-cpe:/a:oracle:linux:python38-ply, p-cpe:/a:oracle:linux:python38-jinja2, p-cpe:/a:oracle:linux:python38-lxml, p-cpe:/a:oracle:linux:python38-numpy-doc, p-cpe:/a:oracle:linux:python38-tkinter, p-cpe:/a:oracle:linux:python38-numpy, p-cpe:/a:oracle:linux:python38-psycopg2, p-cpe:/a:oracle:linux:python38-psutil, p-cpe:/a:oracle:linux:python38-six, p-cpe:/a:oracle:linux:python38-setuptools-wheel, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:python38-rpm-macros, p-cpe:/a:oracle:linux:python38-markupsafe, p-cpe:/a:oracle:linux:python38-wheel, p-cpe:/a:oracle:linux:python38-urllib3, p-cpe:/a:oracle:linux:python38-pyparsing, p-cpe:/a:oracle:linux:python38-pyyaml, p-cpe:/a:oracle:linux:python38-pytz, p-cpe:/a:oracle:linux:python38-attrs, p-cpe:/a:oracle:linux:python38-idna, p-cpe:/a:oracle:linux:python38-pluggy, p-cpe:/a:oracle:linux:python38-pip, p-cpe:/a:oracle:linux:python38-psycopg2-doc, p-cpe:/a:oracle:linux:python38-chardet, p-cpe:/a:oracle:linux:python38-scipy, p-cpe:/a:oracle:linux:python38-numpy-f2py, p-cpe:/a:oracle:linux:python38-wcwidth, p-cpe:/a:oracle:linux:python38-babel, p-cpe:/a:oracle:linux:python38-libs, p-cpe:/a:oracle:linux:python38-atomicwrites, p-cpe:/a:oracle:linux:python38-cython, p-cpe:/a:oracle:linux:python38-wheel-wheel, p-cpe:/a:oracle:linux:python38-pytest

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/16/2021

Vulnerability Publication Date: 11/12/2019

Reference Information

CVE: CVE-2019-18874, CVE-2020-28493, CVE-2021-23336, CVE-2021-28957, CVE-2021-29921, CVE-2021-33503, CVE-2021-3426, CVE-2021-3572, CVE-2021-42771

IAVA: 2021-A-0052-S, 2021-A-0263-S

Detections

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