RHEL 7 : rh-python38 (RHSA-2021:3254) - Nessus

Critical   Plugin ID: 152781

This page contains detailed information about the RHEL 7 : rh-python38 (RHSA-2021:3254) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents
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Plugin Overview

ID: 152781
Name: RHEL 7 : rh-python38 (RHSA-2021:3254)
Filename: redhat-RHSA-2021-3254.nasl
Vulnerability Published: 2020-10-22
This Plugin Published: 2021-08-24
Last Modification Time: 2022-01-26
Plugin Version: 1.4
Plugin Type: local
Plugin Family: Red Hat Local Security Checks
Dependencies: redhat_repos.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Vulnerability Information

Severity: Critical
Vulnerability Published: 2020-10-22
Patch Published: 2021-08-24
CVE [?]: CVE-2020-25659, CVE-2020-27619, CVE-2020-27783, CVE-2020-28493, CVE-2020-36242, CVE-2021-3177, CVE-2021-3426, CVE-2021-3572, CVE-2021-20095, CVE-2021-23336, CVE-2021-28957, CVE-2021-29921, CVE-2021-33503
CPE [?]: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rh-python38-python, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-babel, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-cryptography, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-debug, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-devel, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-idle, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-jinja2, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-libs, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-lxml, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-pip, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-pip-wheel, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-rpm-macros, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-srpm-macros, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-test, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-tkinter, p-cpe:/a:redhat:enterprise_linux:rh-python38-python-urllib3

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3254 advisory.

- python-cryptography: Bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)

- python: Unsafe use of eval() on data retrieved via HTTP in the test suite (CVE-2020-27619)

- python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

- python-jinja2: ReDoS vulnerability due to the sub-pattern (CVE-2020-28493)

- python-cryptography: Large inputs for symmetric encryption can trigger integer overflow leading to buffer overflow (CVE-2020-36242)

- python-babel: Relative path traversal allows attacker to load arbitrary locale files and execute arbitrary code (CVE-2021-20095)

- python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in query parameters (CVE-2021-23336)

- python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957)

- python-ipaddress: Improper input validation of octal strings (CVE-2021-29921)

- python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

- python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503)

- python: Information disclosure via pydoc (CVE-2021-3426)

- python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572)

- python: urllib: Regular expression DoS in AbstractBasicAuthHandler (CVE-2021-3733)

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.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (GitHub)
Exploit Ease: Exploits (PoCs) are available

Here's the list of publicly known exploits and PoCs for verifying the RHEL 7 : rh-python38 (RHSA-2021:3254) vulnerability:

  1. GitHub: https://github.com/indece-official/clair-client
    [CVE-2020-25659]
  2. GitHub: https://github.com/JamesGeee/CVE-2020-27619
    [CVE-2020-27619: PoC for exploiting CVE-2020-27619]
  3. GitHub: https://github.com/sonatype-nexus-community/jake
    [CVE-2020-27783]
  4. GitHub: https://github.com/engn33r/awesome-redos-security
    [CVE-2020-28493]
  5. GitHub: https://github.com/yetingli/PoCs
    [CVE-2020-28493]
  6. GitHub: https://github.com/indece-official/clair-client
    [CVE-2020-36242]
  7. GitHub: https://github.com/sonatype-nexus-community/jake
    [CVE-2020-36242]
  8. GitHub: https://github.com/TAPAKAH20/python_dos_demo
    [CVE-2021-3177]
  9. GitHub: https://github.com/tianocore/edk2-edkrepo
    [CVE-2021-3177]
  10. GitHub: https://github.com/JamesGeee/CVE-2021-23336
    [CVE-2021-23336: PoC for exploiting CVE-2021-23336]
  11. GitHub: https://github.com/mstxq17/SecurityArticleLogger
    [CVE-2021-29921]
  12. GitHub: https://github.com/dbrennand/virustotal-python
    [CVE-2021-33503]
  13. GitHub: https://github.com/engn33r/awesome-redos-security
    [CVE-2021-33503]
  14. GitHub: https://github.com/p-rog/cve-analyser
    [CVE-2021-33503]
  15. GitHub: https://github.com/frenzymadness/CVE-2021-3572
    [CVE-2021-3572: A simple repository helping to test CVE-2021-3572 in PyPA/pip]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2021-3177
CVSS V2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C
CVSS Base Score:7.5 (High)
Impact Subscore:6.4
Exploitability Subscore:10.0
CVSS Temporal Score:5.5 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:5.5 (Medium)
CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Base Score:9.8 (Critical)
Impact Subscore:5.9
Exploitability Subscore:3.9
CVSS Temporal Score:8.5 (High)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:8.5 (High)
STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

This is the redhat-RHSA-2021-3254.nasl nessus plugin source code. This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof. 

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:3254. The text
# itself is copyright (C) Red Hat, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(152781);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/26");

  script_cve_id(
    "CVE-2020-25659",
    "CVE-2020-27619",
    "CVE-2020-27783",
    "CVE-2020-28493",
    "CVE-2020-36242",
    "CVE-2021-3177",
    "CVE-2021-3426",
    "CVE-2021-3572",
    "CVE-2021-20095",
    "CVE-2021-23336",
    "CVE-2021-28957",
    "CVE-2021-29921",
    "CVE-2021-33503"
  );
  script_xref(name:"RHSA", value:"2021:3254");
  script_xref(name:"IAVA", value:"2021-A-0263-S");
  script_xref(name:"IAVA", value:"2021-A-0052-S");

  script_name(english:"RHEL 7 : rh-python38 (RHSA-2021:3254)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2021:3254 advisory.

  - python-cryptography: Bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)

  - python: Unsafe use of eval() on data retrieved via HTTP in the test suite (CVE-2020-27619)

  - python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

  - python-jinja2: ReDoS vulnerability due to the sub-pattern (CVE-2020-28493)

  - python-cryptography: Large inputs for symmetric encryption can trigger integer overflow leading to buffer
    overflow (CVE-2020-36242)

  - python-babel: Relative path traversal allows attacker to load arbitrary locale files and execute arbitrary
    code (CVE-2021-20095)

  - python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in
    query parameters (CVE-2021-23336)

  - python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957)

  - python-ipaddress: Improper input validation of octal strings (CVE-2021-29921)

  - python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

  - python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503)

  - python: Information disclosure via pydoc (CVE-2021-3426)

  - python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572)

  - python: urllib: Regular expression DoS in AbstractBasicAuthHandler (CVE-2021-3733)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/20.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/22.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/79.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/95.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/119.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/120.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/190.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/200.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/385.html");
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  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/444.html");
  script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/835.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-25659");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-27619");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-27783");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-28493");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2020-36242");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-3177");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-3426");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-3572");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-3733");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-20095");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-23336");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-28957");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-29921");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-33503");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:3254");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1889886");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1889988");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1901633");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1918168");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1926226");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1928707");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1928904");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1935913");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1941534");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1955615");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1957458");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1962856");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1968074");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/1995234");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3177");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 22, 79, 95, 119, 120, 190, 200, 385, 400, 444, 835);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/08/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-babel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-cryptography");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-idle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-jinja2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-lxml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-pip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-pip-wheel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-rpm-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-srpm-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-tkinter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-python38-python-urllib3");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item('Host/RedHat/release');
if (isnull(release) || 'Red Hat' >!< release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
var os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '7')) audit(AUDIT_OS_NOT, 'Red Hat 7.x', 'Red Hat ' + os_ver);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var repositories = {
    'rhel_software_collections_1_el7': [
      'rhel-server-rhscl-7-debug-rpms',
      'rhel-server-rhscl-7-rpms',
      'rhel-server-rhscl-7-source-rpms',
      'rhel-workstation-rhscl-7-debug-rpms',
      'rhel-workstation-rhscl-7-rpms',
      'rhel-workstation-rhscl-7-source-rpms'
    ],
    'rhel_software_collections_2_el7': [
      'rhel-7-server-for-system-z-eus-rhscl-debug-rpms',
      'rhel-7-server-for-system-z-eus-rhscl-rpms',
      'rhel-7-server-for-system-z-eus-rhscl-source-rpms',
      'rhel-7-server-for-system-z-rhscl-debug-rpms',
      'rhel-7-server-for-system-z-rhscl-rpms',
      'rhel-7-server-for-system-z-rhscl-source-rpms',
      'rhel-server-rhscl-7-debug-rpms',
      'rhel-server-rhscl-7-eus-debug-rpms',
      'rhel-server-rhscl-7-eus-rpms',
      'rhel-server-rhscl-7-eus-source-rpms',
      'rhel-server-rhscl-7-rpms',
      'rhel-server-rhscl-7-source-rpms',
      'rhel-workstation-rhscl-7-debug-rpms',
      'rhel-workstation-rhscl-7-rpms',
      'rhel-workstation-rhscl-7-source-rpms'
    ],
    'rhel_software_collections_3_el7': [
      'rhel-7-server-for-system-z-a-rhscl-debug-rpms',
      'rhel-7-server-for-system-z-a-rhscl-rpms',
      'rhel-7-server-for-system-z-a-rhscl-source-rpms',
      'rhel-7-server-for-system-z-eus-rhscl-debug-rpms',
      'rhel-7-server-for-system-z-eus-rhscl-rpms',
      'rhel-7-server-for-system-z-eus-rhscl-source-rpms',
      'rhel-7-server-for-system-z-rhscl-debug-rpms',
      'rhel-7-server-for-system-z-rhscl-rpms',
      'rhel-7-server-for-system-z-rhscl-source-rpms',
      'rhel-server-rhscl-7-debug-rpms',
      'rhel-server-rhscl-7-eus-debug-rpms',
      'rhel-server-rhscl-7-eus-rpms',
      'rhel-server-rhscl-7-eus-source-rpms',
      'rhel-server-rhscl-7-rpms',
      'rhel-server-rhscl-7-source-rpms',
      'rhel-workstation-rhscl-7-debug-rpms',
      'rhel-workstation-rhscl-7-rpms',
      'rhel-workstation-rhscl-7-source-rpms'
    ]
};

var repo_sets = rhel_get_valid_repo_sets(repositories:repositories);
if(repo_sets == RHEL_REPOS_NO_OVERLAP_MESSAGE) audit(AUDIT_PACKAGE_LIST_MISSING, RHEL_REPO_AUDIT_PACKAGE_LIST_DETAILS);

var pkgs = [
    {'reference':'rh-python38-python-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-babel-2.7.0-12.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-cryptography-2.8-5.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-cryptography-2.8-5.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-debug-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-debug-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-devel-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-devel-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-idle-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-idle-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-jinja2-2.10.3-6.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-libs-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-libs-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-lxml-4.4.1-7.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-lxml-4.4.1-7.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-pip-19.3.1-2.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-pip-wheel-19.3.1-2.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-rpm-macros-3.8.11-2.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-srpm-macros-3.8.11-2.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-test-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-test-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-tkinter-3.8.11-2.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-tkinter-3.8.11-2.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']},
    {'reference':'rh-python38-python-urllib3-1.25.7-7.el7', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'repo_list':['rhel_software_collections_1_el7', 'rhel_software_collections_2_el7', 'rhel_software_collections_3_el7']}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  var repo_list = NULL;
  if (!empty_or_null(package_array['repo_list'])) repo_list = package_array['repo_list'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = 'RHEL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference &&
      release &&
      (rhel_decide_repo_check(repo_list:repo_list, repo_sets:repo_sets) || (!exists_check || rpm_exists(release:release, rpm:exists_check))) &&
      rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}

if (flag)
{
  var extra = NULL;
  if (empty_or_null(repo_sets)) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get() + redhat_report_package_caveat();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'rh-python38-python / rh-python38-python-babel / etc');
}

The latest version of this script can be found in these locations depending on your platform:

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/redhat-RHSA-2021-3254.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\redhat-RHSA-2021-3254.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/redhat-RHSA-2021-3254.nasl

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How to Run

Here is how to run the RHEL 7 : rh-python38 (RHSA-2021:3254) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select Red Hat Local Security Checks plugin family.
  6. On the right side table select RHEL 7 : rh-python38 (RHSA-2021:3254) plugin ID 152781.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl redhat-RHSA-2021-3254.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a redhat-RHSA-2021-3254.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - redhat-RHSA-2021-3254.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state redhat-RHSA-2021-3254.nasl -t <IP/HOST>

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References

RHSA | Red Hat Security Advisory: IAVA | Information Assurance Vulnerability Alert:
  • 2021-A-0052-S, 2021-A-0263-S
CWE | Common Weakness Enumeration:
  • CWE-20 (Weakness) Improper Input Validation
  • CWE-22 (Weakness) Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-79 (Weakness) Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-95 (Weakness) Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
  • CWE-119 (Weakness) Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-120 (Weakness) Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-190 (Weakness) Integer Overflow or Wraparound
  • CWE-200 (Weakness) Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-385 (Weakness) Covert Timing Channel
  • CWE-400 (Weakness) Uncontrolled Resource Consumption
  • CWE-444 (Weakness) Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
  • CWE-835 (Weakness) Loop with Unreachable Exit Condition ('Infinite Loop')
See also: Similar and related Nessus plugins:
  • 157680 - AlmaLinux 8 : python3 (ALSA-2021:1633)
  • 155049 - CentOS 8 : python27:2.7 (CESA-2021:4151)
  • 155040 - CentOS 8 : python39:3.9 and python39-devel:3.9 (CESA-2021:4160)
  • 155064 - CentOS 8 : python38:3.8 and python38-devel:3.8 (CESA-2021:4162)
  • 158032 - Debian DLA-2919-1 : python2.7 - LTS security update
  • 156495 - EulerOS Virtualization 3.0.2.6 : python (EulerOS-SA-2021-2875)
  • 145281 - Fedora 33 : python3.8 (2021-cc3ff94cfc)
  • 145562 - Fedora 32 : python39 (2021-e3a5a74610)
  • 145318 - Fedora 33 : python3.9 (2021-faf88b9499)
  • 145303 - GLSA-202101-18 : Python: Multiple vulnerabilities
  • 153002 - openSUSE 15 Security Update : python39 (openSUSE-SU-2021:2940-1)
  • 156140 - openSUSE 15 Security Update : python3 (openSUSE-SU-2021:4104-1)
  • 152764 - Oracle Linux 8 : python27:2.7 (ELSA-2021-1761)
  • 155324 - Oracle Linux 8 : python38:3.8 (ELSA-2021-1879)
  • 155987 - Oracle Linux 8 : python27:2.7 (ELSA-2021-4151)
  • 155967 - Oracle Linux 8 : python39:3.9 / and / python39-devel:3.9 (ELSA-2021-4160)
  • 155969 - Oracle Linux 8 : python38:3.8 / and / python38-devel:3.8 (ELSA-2021-4162)
  • 154332 - Oracle Database Server Multiple Vulnerabilities (October 2021 CPU)
  • 145534 - Python Buffer Overflow (CVE-2021-3177)
  • 149712 - RHEL 8 : python3 (RHSA-2021:1633)
  • 149710 - RHEL 8 : python27:2.7 (RHSA-2021:1761)
  • 149708 - RHEL 8 : python38:3.8 (RHSA-2021:1879)
  • 152778 - RHEL 7 : python27 (RHSA-2021:3252)
  • 155151 - RHEL 8 : python27:2.7 (RHSA-2021:4151)
  • 155200 - RHEL 8 : python39:3.9 and python39-devel:3.9 (RHSA-2021:4160)
  • 155193 - RHEL 8 : python38:3.8 and python38-devel:3.8 (RHSA-2021:4162)
  • 152997 - SUSE SLED15 / SLES15 Security Update : python39 (SUSE-SU-2021:2940-1)
  • 154302 - SUSE SLES12 Security Update : python36 (SUSE-SU-2021:3486-1)
  • 156050 - SUSE SLED15 / SLES15 Security Update : python3 (SUSE-SU-2021:4015-1)
  • 156282 - SUSE SLES15 Security Update : python3 (SUSE-SU-2021:4015-2)
  • 156148 - SUSE SLED15 / SLES15 Security Update : python3 (SUSE-SU-2021:4104-1)
  • 153852 - Ubuntu 20.04 LTS : Python vulnerability (USN-4973-2)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file redhat-RHSA-2021-3254.nasl version 1.4. For more plugins, visit the Nessus Plugin Library.

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