Oracle Linux 8 : python39:3.9 / and / python39-devel:3.9 (ELSA-2023-2764)

high Nessus Plugin ID 176305


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


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

- 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)

- 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)

- ** DISPUTED ** Python 3.x through 3.10 has an open redirection vulnerability in lib/http/ 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)

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


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 176305

File Name: oraclelinux_ELSA-2023-2764.nasl

Version: 1.0

Type: local

Agent: unix

Published: 5/24/2023

Updated: 5/24/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 5.2


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


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

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: 5/23/2023

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