Libraesva ESG 4.5 < 5.0.31 / 5.1.20 / 5.2.31 / 5.3.16 / 5.4.8 / 5.5.7 Command Injection (CVE-2025-59689)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(282475);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/17");

  script_cve_id("CVE-2025-59689");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2025/10/20");

  script_name(english:"Libraesva ESG 4.5 < 5.0.31 / 5.1.20 / 5.2.31 / 5.3.16 / 5.4.8 / 5.5.7 Command Injection (CVE-2025-59689)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Libraesva ESG host is affected by a command injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Libraesva ESG installed on the remote host is affected by a command injection flaw as 
referenced in the CVE-2025-59689 advisory. The vulnerability is triggered by an improper sanitization 
mechanism when removing active code from specific compressed archive formats.

An attacker can exploit this by sending a malicious email containing a specially crafted compressed 
attachment. Successful exploitation allows the potential execution of arbitrary shell commands under 
a non-privileged user account. This vulnerability has been identified as being used in at least one 
confirmed incident by a foreign hostile state entity.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://docs.libraesva.com/knowledgebase/security-advisory-command-injection-vulnerability-cve-2025-59689/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6e6329f7");
  script_set_attribute(attribute:"solution", value:
"Update Libraesva ESG to version 5.0.31, 5.1.20, 5.2.31, 5.3.16, 5.4.8, 5.5.7 or later.");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-59689");

  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:"2025/09/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/08");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:libraesva:email_security_gateway");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("libraesva_email_security_gateway_detect.nbin");
  script_require_ports("Services/www", 443);

  exit(0);
}


include('vcf.inc');
include('http.inc');

var port = get_http_port(default:443);

var app_info = vcf::get_app_info(app:'Libraesva Email Security Gateway', port:port, webapp:TRUE);

var constraints = [
  {'min_version':'4.5', 'fixed_version' : '5.0','fixed_display':'see vendor advisory'},
  {'min_version':'5.0', 'fixed_version':'5.0.31'},
  {'min_version':'5.1', 'fixed_version':'5.1.20'},
  {'min_version':'5.2', 'fixed_version':'5.2.31'},
  {'min_version':'5.3', 'fixed_version':'5.3.16'},
  {'min_version':'5.4', 'fixed_version':'5.4.8'},
  {'min_version':'5.5', 'fixed_version':'5.5.7'}
];

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