SUSE SLES15 Security Update : openssl-1_1 (SUSE-SU-2026:1290-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2026:1290-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(306331);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/05");

  script_cve_id(
    "CVE-2026-28387",
    "CVE-2026-28388",
    "CVE-2026-28389",
    "CVE-2026-31789"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2026:1290-1");

  script_name(english:"SUSE SLES15 Security Update : openssl-1_1 (SUSE-SU-2026:1290-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2026:1290-1 advisory.

    - CVE-2026-28387: Potential use-after-free in DANE client code (bsc#1260441).
    - CVE-2026-28388: NULL Pointer Dereference When Processing a Delta CRL (bsc#1260442).
    - CVE-2026-28389: Possible NULL dereference when processing CMS KeyAgreeRecipientInfo (bsc#1260443).
    - CVE-2026-31789: Heap buffer overflow in hexadecimal conversion (bsc#1260444).

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/1260441");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260442");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260443");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260444");
  # https://lists.suse.com/pipermail/sle-security-updates/2026-April/025312.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?834479bf");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-28387");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-28388");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-28389");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-31789");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-31789");

  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:"2026/04/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl-1_1-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl1_1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl1_1-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl1_1-hmac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libopenssl1_1-hmac-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssl-1_1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  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, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15 / SLES_SAP15', 'SUSE (' + os_ver + ')');

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, 'SUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'libopenssl1_1-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'libopenssl1_1-hmac-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5', 'sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-hmac-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5', 'sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-15.5', 'SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5', 'sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl1_1-hmac-32bit-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5', 'sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.5', 'SLE_HPC-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl-1_1-devel-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'libopenssl1_1-hmac-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']},
    {'reference':'openssl-1_1-1.1.1l-150500.17.51.1', 'sp':'5', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-ltss-release-15.5', 'sles-release-15.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = 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['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        if ('ltss' >< tolower(check)) ltss_caveat_required = TRUE;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  var ltss_plugin_caveat = NULL;
  if(ltss_caveat_required) ltss_plugin_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in SUSE Enterprise Linux Server LTSS\n' +
    'repositories. Access to these package security updates require\n' +
    'a paid SUSE LTSS subscription.\n';
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + ltss_plugin_caveat
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libopenssl-1_1-devel / libopenssl1_1 / libopenssl1_1-32bit / etc');
}