AlmaLinux 8 : go-toolset:rhel8 (ALSA-2026:60305)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2026:60305.
##

include('compat.inc');

if (description)
{
  script_id(341046);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/27");

  script_cve_id(
    "CVE-2026-33818",
    "CVE-2026-56853",
    "CVE-2026-56858",
    "CVE-2026-56859",
    "CVE-2026-56860",
    "CVE-2026-56862"
  );
  script_xref(name:"ALSA", value:"2026:60305");
  script_xref(name:"IAVB", value:"2026-B-0234");
  script_xref(name:"RHSA", value:"2026:60305");

  script_name(english:"AlmaLinux 8 : go-toolset:rhel8 (ALSA-2026:60305)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ALSA-2026:60305 advisory.

    * encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal
    (CVE-2026-33818)
      * net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution
    (CVE-2026-56860)
      * net/[http:](http:) golang: Go net/[http:](http:) Unencrypted HTTP/2 connections vulnerable to Denial
    of Service (CVE-2026-56853)
      * html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)
      * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages
    (CVE-2026-56862)
      * encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)


    Bug Fix(es) and Enhancement(s):

      * Update Go to version 1.26.7+1 [almalinux-8.10.z] (JIRA:AlmaLinux-246426)

Tenable has extracted the preceding description block directly from the AlmaLinux 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://errata.almalinux.org/8/ALSA-2026-60305.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:60305");
  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: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:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-56858");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(1050, 770, 776, 79);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:delve");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:go-toolset");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-misc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-race");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-src");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:golang-tests");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::baseos");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::highavailability");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::nfv");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::powertools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::realtime");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::resilientstorage");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::sap_hana");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::supplementary");
  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:"Alma Linux 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/AlmaLinux/release", "Host/AlmaLinux/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_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 8.x', 'AlmaLinux ' + os_version);

if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'ppc' >!< cpu && 's390' >!< cpu && 'x86_64' >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);

var module_ver = get_kb_item('Host/AlmaLinux/appstream/go-toolset');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');
if ('rhel8' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module go-toolset:' + module_ver);

var constraints = {
  'go-toolset:rhel8': [
    {
      'release': '8',
      'pkgs': [
        {'reference':'delve-1.26.1-1.module_el8.10.0+4223+bd807c2e', 'cpu':'aarch64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'delve-1.26.1-1.module_el8.10.0+4223+bd807c2e', 'cpu':'ppc64le', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'delve-1.26.1-1.module_el8.10.0+4223+bd807c2e', 'cpu':'x86_64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'go-toolset-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'aarch64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'go-toolset-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'ppc64le', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'go-toolset-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'s390x', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'go-toolset-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'x86_64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'aarch64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'ppc64le', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'s390x', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'x86_64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-bin-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'aarch64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-bin-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'ppc64le', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-bin-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'s390x', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-bin-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'x86_64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-docs-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-misc-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-race-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'aarch64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-race-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'ppc64le', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-race-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'s390x', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-race-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'cpu':'x86_64', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-src-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
        {'reference':'golang-tests-1.26.7-1.module_el8.10.0+4264+117c8fc2', 'el_string':'el8.10.0', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
      ]
    }
  ]
};

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
var appstreams_found = 0;
var appstream;
var appstream_name;
var appstream_version;
foreach var module (keys(constraints)) {
  appstream = NULL;
  appstream_name = NULL;
  appstream_version = NULL;
  appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/AlmaLinux/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach var module_array ( constraints[module] ) {
      # Check that the target release is equal to the affected release
      if (!empty_or_null(module_array['release'])){
        if (module_array['release'] != os_release) continue;
      }
      if (!empty_or_null(module_array['sp'])){
        if (module_array['sp'] != os_sp) continue;
      }
      foreach var package_array ( module_array['pkgs'] ) {
        reference = NULL;
        sp = NULL;
        _cpu = NULL;
        el_string = NULL;
        rpm_spec_vers_cmp = NULL;
        epoch = NULL;
        allowmaj = NULL;
        exists_check = NULL;
        cves = NULL;
        if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
        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['el_string'])) el_string = package_array['el_string'];
        if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
        if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
        if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
        if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
        if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
        if (reference &&
            (!exists_check || rpm_exists(rpm:exists_check)) &&
            rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
      }
    }
  }
}

if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');

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, 'delve / go-toolset / golang / golang-bin / golang-docs / etc');
}