Dell Enterprise SONiC OS < 4.5.0a RCE (DSA-2025-275)

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

include('compat.inc');

if (description)
{
  script_id(270328);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/14");

  script_cve_id("CVE-2025-38741");
  script_xref(name:"IAVA", value:"2025-A-0584");

  script_name(english:"Dell Enterprise SONiC OS < 4.5.0a RCE (DSA-2025-275)");

  script_set_attribute(attribute:"synopsis", value:
"The Dell Enterprise SONiC OS on the remote host is affected by a remote code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Dell Enterprise SONiC OS running on the remote host is prior to 4.5.0a.
It is, therefore, affected by a remote code execution vulnerability as detailed in the DSA-2025-275 advisory:

  - Dell Enterprise SONiC OS, version 4.5.0, contains a cryptographic key vulnerability in SSH. An
  unauthenticated remote attacker could potentially exploit this vulnerability, leading to unauthorized access
  to communication. (CVE-2025-38741)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://www.dell.com/support/kbdoc/en-ie/000340083/dsa-2025-275-security-update-for-dell-enterprise-sonic-distribution-vulnerabilities
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b3aa2bdc");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Dell Enterprise SONiC OS 4.5.0a or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-38741");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/14");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:dell:enterprise_sonic_distribution");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("dell_sonicos_installed.nbin");
  script_require_keys("installed_sw/Dell Enterprise SONiC OS", "Settings/ParanoidReport");

  exit(0);
}

include('vcf.inc');

var app_info = vcf::get_app_info(app:'Dell Enterprise SONiC OS');

# 4.5.0 can be safe if SSH server key pairs are regenerated, which we can't check
if (report_paranoia < 2) audit(AUDIT_PARANOID);

var constraints = [
  {'equal': '4.5.0', 'fixed_version': '4.5.0a'}
];

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