openSUSE 16 Security Update : trivy (openSUSE-SU-2026:21835-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2026:21835-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(346193);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/16");

  script_cve_id(
    "CVE-2026-53495",
    "CVE-2026-56854",
    "CVE-2026-56855",
    "CVE-2026-78662"
  );

  script_name(english:"openSUSE 16 Security Update : trivy (openSUSE-SU-2026:21835-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the
openSUSE-SU-2026:21835-1 advisory.

    - CVE-2026-53495: containerd: CRI ExecSync goroutine leak can lead to node-level denial of service
    (bsc#1280111).
    - CVE-2026-56854: golang.org/x/crypto/ssh: unenforced source-address restrictions across non-public-key
    authentication
      callbacks can cause authorization bypasses and unauthorized client logins (bsc#1278624).
    - CVE-2026-56855: golang.org/x/crypto/ssh: unhandled RFC 4254 channel messages can cause connection
    deadlocks and
      denial of service (bsc#1278624).
    - CVE-2026-78662: golang.org/x/crypto/ssh: unvalidated incoming requests on unestablished channels can
    cause connection
      deadlocks and denial of service (bsc#1278624).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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://bugzilla.suse.com/1278624");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1280111");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-53495");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-56854");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-56855");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-78662");
  script_set_attribute(attribute:"solution", value:
"Update the affected trivy package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-56854");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-78662");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-53495");

  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:"2026/08/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:trivy");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:16.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/SuSE/release');
if (isnull(os_release) || os_release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var _os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:os_release);
if (isnull(_os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
_os_ver = _os_ver[1];
if (os_release !~ "^(SUSE16\.0)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '16.0', os_release);
if (!get_kb_item("Host/SuSE/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, 'openSUSE ' + _os_ver, cpu);

var pkgs = [
    {'reference':'trivy-0.74.0-160000.3.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var _cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (rpm_check(release:_release, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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, 'trivy');
}