RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) - Nessus

Medium Plugin ID: 160055

This page contains detailed information about the RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) 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
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 160055
Name: RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463)
Filename: redhat-RHSA-2022-1463.nasl
Vulnerability Published: 2021-12-10
This Plugin Published: 2022-04-21
Last Modification Time: 2022-04-26
Plugin Version: 1.3
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: Medium
Vulnerability Published: 2021-12-10
Patch Published: 2022-04-20
CVE [?]: CVE-2021-45105
CPE [?]: cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak, p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak-server
Exploited by Malware: True

Synopsis

The remote Red Hat host is missing a security update.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:1463 advisory.

- log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and context lookup pattern (CVE-2021-45105)

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 rh-sso7-keycloak and / or rh-sso7-keycloak-server packages.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) vulnerability:

GitHub: https://github.com/AlvaroMartinezQ/clickandbuy
[CVE-2021-45105]
GitHub: https://github.com/Cosmo-Tech/azure-digital-twins-simulator-connector
[CVE-2021-45105]
GitHub: https://github.com/CptOfEvilMinions/ChooseYourSIEMAdventure
[CVE-2021-45105]
GitHub: https://github.com/HackJava/Log4j2
[CVE-2021-45105]
GitHub: https://github.com/HynekPetrak/log4shell-finder
[CVE-2021-45105]
GitHub: https://github.com/NiftyBank/java-app
[CVE-2021-45105]
GitHub: https://github.com/Qualys/log4jscanwin
[CVE-2021-45105]
GitHub: https://github.com/binkley/modern-java-practices
[CVE-2021-45105]
GitHub: https://github.com/cckuailong/Log4j_dos_CVE-2021-45105
[CVE-2021-45105: Log4j_dos_CVE-2021-45105]
GitHub: https://github.com/davejwilson/azure-spark-pools-log4j
[CVE-2021-45105]
GitHub: https://github.com/dileepdkumar/https-github.com-dileepdkumar-https-github.com-pravin-pp-log4j2-CVE-2021-45105
[CVE-2021-45105]
GitHub: https://github.com/dileepdkumar/https-github.com-dileepdkumar-https-github.com-pravin-pp-log4j2-CVE-2021-45105-v
[CVE-2021-45105]
GitHub: https://github.com/dileepdkumar/https-github.com-pravin-pp-log4j2-CVE-2021-45105
[CVE-2021-45105]
GitHub: https://github.com/dileepdkumar/https-github.com-pravin-pp-log4j2-CVE-2021-45105-1
[CVE-2021-45105]
GitHub: https://github.com/dtact/divd-2021-00038--log4j-scanner
[CVE-2021-45105: Scan systems and docker images for potential log4j vulnerabilities. Able to patch ...]
GitHub: https://github.com/hackername0102/log4j
[CVE-2021-45105: POC of CVE-2021-45105]
GitHub: https://github.com/imTigger/webapp-hardware-bridge
[CVE-2021-45105]
GitHub: https://github.com/jacobalberty/unifi-docker
[CVE-2021-45105]
GitHub: https://github.com/logpresso/CVE-2021-44228-Scanner
[CVE-2021-45105]
GitHub: https://github.com/mergebase/csv-compare
[CVE-2021-45105]
GitHub: https://github.com/mosaic-hgw/jMeter
[CVE-2021-45105]
GitHub: https://github.com/name/log4j
[CVE-2021-45105: Discover Log4Shell vulnerability [CVE-2021-45105]]
GitHub: https://github.com/open-source-agenda/new-open-source-projects
[CVE-2021-45105]
GitHub: https://github.com/pravin-pp/log4j2-CVE-2021-45105
[CVE-2021-45105]
GitHub: https://github.com/sakuraji-labs/log4j-remediation
[CVE-2021-45105: Discover and remediate Log4Shell vulnerability [CVE-2021-45105]]
GitHub: https://github.com/sakuraji-labs/sakuraji_log4j
[CVE-2021-45105: Discover and remediate Log4Shell vulnerability [CVE-2021-45105]]
GitHub: https://github.com/srhercules/log4j_mass_scanner
[CVE-2021-45105]
GitHub: https://github.com/tcoliver/IBM-SPSS-log4j-fixes
[CVE-2021-45105]
GitHub: https://github.com/tejas-nagchandi/CVE-2021-45105
[CVE-2021-45105: Replicating CVE-2021-45105]
GitHub: https://github.com/thl-cmk/CVE-log4j-check_mk-plugin
[CVE-2021-45105]
GitHub: https://github.com/tmax-cloud/install-EFK
[CVE-2021-45105]
GitHub: https://github.com/watson-developer-cloud/assistant-with-discovery
[CVE-2021-45105]
GitHub: https://github.com/whitesource/log4j-detect-distribution
[CVE-2021-45105]
GitHub: https://github.com/iAmSOScArEd/log4j2_dos_exploit
[CVE-2021-45105: Log4j2 dos exploit,CVE-2021-45105 exploit,Denial of Service poc]

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-2021-45105
CVSS V2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P/E:H/RL:OF/RC:C

CVSS Base Score:	4.3 (Medium)
Impact Subscore:	2.9
Exploitability Subscore:	8.6
CVSS Temporal Score:	3.7 (Low)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	3.7 (Low)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:O/RC:C

CVSS Base Score:	5.9 (Medium)
Impact Subscore:	3.6
Exploitability Subscore:	2.2
CVSS Temporal Score:	5.7 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.7 (Medium)

STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2022:1463. The text
# itself is copyright (C) Red Hat, Inc.
##

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

if (description)
{
  script_id(160055);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/26");

  script_cve_id("CVE-2021-45105");
  script_xref(name:"RHSA", value:"2022:1463");
  script_xref(name:"IAVA", value:"2021-A-0573");
  script_xref(name:"IAVA", value:"2022-A-0029");

  script_name(english:"RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2022:1463 advisory.

  - log4j-core: DoS in log4j 2.x with Thread Context Map (MDC) input data contains a recursive lookup and
    context lookup pattern (CVE-2021-45105)

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/674.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-45105");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2022:1463");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/2034067");
  script_set_attribute(attribute:"solution", value:
"Update the affected rh-sso7-keycloak and / or rh-sso7-keycloak-server packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-45105");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_cwe_id(20, 674);

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/12/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/04/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/04/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rh-sso7-keycloak-server");
  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) 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('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: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.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 = {
    'red_hat_single_sign_on_7_5_el8': [
      'rh-sso-7.5-for-rhel-8-x86_64-rpms',
      'rh-sso-7.5-for-rhel-8-x86_64-source-rpms'
    ],
    'red_hat_single_sign_on_7_el8': [
      'rh-sso-7.3-for-rhel-8-x86_64-debug-rpms',
      'rh-sso-7.3-for-rhel-8-x86_64-rpms',
      'rh-sso-7.3-for-rhel-8-x86_64-source-rpms',
      'rh-sso-7.4-for-rhel-8-x86_64-debug-rpms',
      'rh-sso-7.4-for-rhel-8-x86_64-rpms',
      'rh-sso-7.4-for-rhel-8-x86_64-source-rpms'
    ]
};

var repo_sets = rhel_get_valid_repo_sets(repositories:repositories);
if(repo_sets == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var pkgs = [
    {'reference':'rh-sso7-keycloak-15.0.6-1.redhat_00001.1.el8sso', 'release':'8', 'el_string':'el8sso', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rh-sso', 'repo_list':['red_hat_single_sign_on_7_5_el8', 'red_hat_single_sign_on_7_el8']},
    {'reference':'rh-sso7-keycloak-server-15.0.6-1.redhat_00001.1.el8sso', 'release':'8', 'el_string':'el8sso', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'rh-sso', 'repo_list':['red_hat_single_sign_on_7_5_el8', 'red_hat_single_sign_on_7_el8']}
];

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_WARNING,
      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-sso7-keycloak / rh-sso7-keycloak-server');
}

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-2022-1463.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\redhat-RHSA-2022-1463.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/redhat-RHSA-2022-1463.nasl

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How to Run

Here is how to run the RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Red Hat Local Security Checks plugin family.
On the right side table select RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) plugin ID 160055.
Specify the target on the Settings tab and click to Save the scan.
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-2022-1463.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a redhat-RHSA-2022-1463.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-2022-1463.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-2022-1463.nasl -t <IP/HOST>

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References

RHSA | Red Hat Security Advisory:

2022:1463

IAVA | Information Assurance Vulnerability Alert:

2021-A-0573, 2022-A-0029

CWE | Common Weakness Enumeration:

CWE-20 (Weakness) Improper Input Validation
CWE-674 (Weakness) Uncontrolled Recursion

See also:

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156396 - Debian DLA-2852-1 : apache-log4j2 - LTS security update
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156323 - FreeBSD : OpenSearch -- Log4Shell (d1be3d73-6737-11ec-9eea-589cfc007716)
156270 - openSUSE 15 Security Update : log4j (openSUSE-SU-2021:1605-1)
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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file redhat-RHSA-2022-1463.nasl version 1.3. For more plugins, visit the Nessus Plugin Library.

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RHEL 8 : Red Hat Single Sign-On 7.5.2 security update on RHEL 8 (Low) (RHSA-2022:1463) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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