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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.APACHE_LOG4J_1_2.NASL
HistoryDec 15, 2021 - 12:00 a.m.

Apache Log4j 1.2 JMSAppender Remote Code Execution (CVE-2021-4104)

2021-12-1500:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
196

9.5 High

AI Score

Confidence

High

The version of Apache Log4j on the remote host is 1.2. It is, therefore, affected by a remote code execution vulnerability when specifically configured to use JMSAppender.

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

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(156103);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/22");

  script_cve_id("CVE-2021-4104");
  script_xref(name:"IAVA", value:"2021-A-0573");
  script_xref(name:"IAVA", value:"0001-A-0650");

  script_name(english:"Apache Log4j 1.2 JMSAppender Remote Code Execution (CVE-2021-4104)");

  script_set_attribute(attribute:"synopsis", value:
"A package installed on the remote host is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Apache Log4j on the remote host is 1.2. It is, therefore, affected by a remote code execution
vulnerability when specifically configured to use JMSAppender.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://github.com/apache/logging-log4j2/pull/608#issuecomment-990494126
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?33485eac");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-4104");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Log4j version 2.16.0 or later since 1.x is end of life.

Upgrading to the latest versions for Apache Log4j is highly recommended as intermediate 
versions / patches have known high severity vulnerabilities and the vendor is updating 
their advisories often as new research and knowledge about the impact of Log4j is 
discovered. Refer to https://logging.apache.org/log4j/2.x/security.html for the latest 
versions.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-4104");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:log4j");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("apache_log4j_nix_installed.nbin", "apache_log4j_win_installed.nbin");
  script_require_keys("installed_sw/Apache Log4j");

  exit(0);
}

include('vcf.inc');

var app = 'Apache Log4j';

var app_info = vcf::get_app_info(app:app);

if (app_info['JMSAppender.class association'] == "Not Found")
  audit(AUDIT_OS_CONF_NOT_VULN, app, app_info.version);

var constraints = [{ 'min_version':'1.2.0', 'max_version':'1.2.17', 'fixed_version':'2.16.0' }];

vcf::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING
);
VendorProductVersion
apachelog4j

9.5 High

AI Score

Confidence

High

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