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CentOS 8 : python39:3.9 and python39-devel:3.9 (CESA-2023:2764)

high Nessus Plugin ID 175898

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2023:2764 advisory.

 - A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int(text), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability. (CVE-2020-10735)

 - Python 3.x through 3.10 has an open redirection vulnerability in lib/http/server.py due to no protection against multiple (/) at the beginning of URI path which may leads to information disclosure. NOTE: this is disputed by a third party because the http.server.html documentation page states Warning: http.server is not recommended for production. It only implements basic security checks. (CVE-2021-28861)

 - An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname.
 For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16. (CVE-2022-45061)

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.

See Also

https://access.redhat.com/errata/RHSA-2023:2764

Plugin Details

Severity: High

ID: 175898

File Name: centos8_RHSA-2023-2764.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/17/2023

Updated: 2/8/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2021-28861

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:python39-packaging, p-cpe:/a:centos:centos:python39-requests, p-cpe:/a:centos:centos:python39-cryptography, p-cpe:/a:centos:centos:python39-pyparsing, p-cpe:/a:centos:centos:python39-six, p-cpe:/a:centos:centos:python39-attrs, p-cpe:/a:centos:centos:python39, p-cpe:/a:centos:centos:python39-toml, p-cpe:/a:centos:centos:python39-iniconfig, p-cpe:/a:centos:centos:python39-pysocks, p-cpe:/a:centos:centos:python39-test, p-cpe:/a:centos:centos:python39-wheel, p-cpe:/a:centos:centos:python39-more-itertools, cpe:/o:centos:centos:8-stream, p-cpe:/a:centos:centos:python39-setuptools, p-cpe:/a:centos:centos:python39-lxml, p-cpe:/a:centos:centos:python39-setuptools-wheel, p-cpe:/a:centos:centos:python39-pymysql, p-cpe:/a:centos:centos:python39-pip-wheel, p-cpe:/a:centos:centos:python39-scipy, p-cpe:/a:centos:centos:python39-pybind11, p-cpe:/a:centos:centos:python39-ply, p-cpe:/a:centos:centos:python39-chardet, p-cpe:/a:centos:centos:python39-mod_wsgi, p-cpe:/a:centos:centos:python39-psycopg2-doc, p-cpe:/a:centos:centos:python39-pluggy, p-cpe:/a:centos:centos:python39-wcwidth, p-cpe:/a:centos:centos:python39-numpy-doc, p-cpe:/a:centos:centos:python39-py, p-cpe:/a:centos:centos:python39-numpy-f2py, p-cpe:/a:centos:centos:python39-tkinter, p-cpe:/a:centos:centos:python39-cython, p-cpe:/a:centos:centos:python39-pip, p-cpe:/a:centos:centos:python39-psycopg2-tests, p-cpe:/a:centos:centos:python39-pycparser, p-cpe:/a:centos:centos:python39-devel, p-cpe:/a:centos:centos:python39-cffi, p-cpe:/a:centos:centos:python39-libs, p-cpe:/a:centos:centos:python39-psutil, p-cpe:/a:centos:centos:python39-pytest, p-cpe:/a:centos:centos:python39-psycopg2, p-cpe:/a:centos:centos:python39-idle, p-cpe:/a:centos:centos:python39-numpy, p-cpe:/a:centos:centos:python39-pyyaml, p-cpe:/a:centos:centos:python39-pybind11-devel, p-cpe:/a:centos:centos:python39-debug, p-cpe:/a:centos:centos:python39-rpm-macros, p-cpe:/a:centos:centos:python39-idna, p-cpe:/a:centos:centos:python39-wheel-wheel, p-cpe:/a:centos:centos:python39-urllib3

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/16/2023

Vulnerability Publication Date: 8/23/2022

Reference Information

CVE: CVE-2020-10735, CVE-2021-28861, CVE-2022-45061

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

RHSA: 2023:2764