NewStart CGSL MAIN 7.02 : openssh Multiple Vulnerabilities (NS-SA-2026-0101)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2026-0101. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(343592);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/08");

  script_cve_id(
    "CVE-2026-35385",
    "CVE-2026-35386",
    "CVE-2026-35387",
    "CVE-2026-35388",
    "CVE-2026-59995",
    "CVE-2026-59996",
    "CVE-2026-59997",
    "CVE-2026-59999",
    "CVE-2026-60000",
    "CVE-2026-60001",
    "CVE-2026-60002"
  );
  script_xref(name:"IAVA", value:"2026-A-0296-S");
  script_xref(name:"IAVA", value:"2026-A-0691-S");

  script_name(english:"NewStart CGSL MAIN 7.02 : openssh Multiple Vulnerabilities (NS-SA-2026-0101)");

  script_set_attribute(attribute:"synopsis", value:
"The remote NewStart CGSL host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 7.02, has openssh packages installed that are affected by multiple
vulnerabilities:

  - ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-
    exchange. (This outcome occurs only on the client side.) (CVE-2026-60002)

  - In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to
    some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without
    -p (preserve mode). (CVE-2026-35385)

  - In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a
    command line. This requires a scenario where the username on the command line is untrusted, and also
    requires a non-default configurations of % in ssh_config. (CVE-2026-35386)

  - OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in
    PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
    (CVE-2026-35387)

  - OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
    (CVE-2026-35388)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/notice/NS-SA-2026-0101");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-35385");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-35386");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-35387");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-35388");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-59995");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-59996");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-59997");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-59999");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-60000");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-60001");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-60002");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL openssh packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-60002");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-clients-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-keycat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-server-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:openssh-sk-dummy");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

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

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var os_release = get_kb_item('Host/ZTE-CGSL/release');
if (isnull(os_release) || os_release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (os_release !~ "CGSL\sMAIN\s7\.02")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 7.02');

if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);

var flag = 0;

var pkgs = {
  'CGSL MAIN 7.02': [
    'openssh-9.3p2-1.zncgsl7.60',
    'openssh-api-9.3p2-1.zncgsl7.60',
    'openssh-askpass-9.3p2-1.zncgsl7.60',
    'openssh-clients-9.3p2-1.zncgsl7.60',
    'openssh-clients-core-9.3p2-1.zncgsl7.60',
    'openssh-core-9.3p2-1.zncgsl7.60',
    'openssh-doc-9.3p2-1.zncgsl7.60',
    'openssh-keycat-9.3p2-1.zncgsl7.60',
    'openssh-server-9.3p2-1.zncgsl7.60',
    'openssh-server-core-9.3p2-1.zncgsl7.60',
    'openssh-sk-dummy-9.3p2-1.zncgsl7.60'
  ]
};
var pkg_list = pkgs[os_release];
var pkg;
foreach (pkg in pkg_list)
  if (rpm_check(reference:pkg, release:'ZTE ' + os_release, rpm_spec_vers_cmp:TRUE)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'openssh');
}