CentOS Linux 6 [TuxCare] Security Update: mysql / mysql-bench / mysql-devel / mysql-embedded / etc Multiple Vulnerabilities (CENTOS6:CLSA-2026:1781109213)

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

include('compat.inc');

if (description)
{
  script_id(362221);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id("CVE-2018-2562", "CVE-2018-2773", "CVE-2018-3174");
  script_xref(name:"CLSA", value:"2026:1781109213");

  script_name(english:"CentOS Linux 6 [TuxCare] Security Update: mysql / mysql-bench / mysql-devel / mysql-embedded / etc Multiple Vulnerabilities (CENTOS6:CLSA-2026:1781109213)");

  script_set_attribute(attribute:"synopsis", value:
"The CentOS Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The CentOS Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the
TuxCare CENTOS6:CLSA-2026:1781109213 advisory.

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server : Partition). Supported
    versions that are affected are 5.5.58 and prior, 5.6.38 and prior and 5.7.19 and prior. Easily exploitable
    vulnerability allows low privileged attacker with network access via multiple protocols to compromise
    MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang
    or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or
    delete access to some of MySQL Server accessible data. (CVE-2018-2562)

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Client programs). Supported
    versions that are affected are 5.5.59 and prior, 5.6.39 and prior and 5.7.21 and prior. Difficult to
    exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server
    executes to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized
    ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2018-2773)

  - Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Client programs). Supported
    versions that are affected are 5.5.61 and prior, 5.6.41 and prior, 5.7.23 and prior and 8.0.12 and prior.
    Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where
    MySQL Server executes to compromise MySQL Server. While the vulnerability is in MySQL Server, attacks may
    significantly impact additional products. Successful attacks of this vulnerability can result in
    unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server.
    (CVE-2018-3174)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/centos6els/advisories/2026/clsa-2026_1781109213.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b2993e51");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2026:1781109213");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in TuxCare advisory CENTOS6:CLSA-2026:1781109213.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/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:L/UI:N/S:U/C:N/I:L/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-2018-2562");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CentOS 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/OS/extended-third-party", "Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

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) || 'CentOS Linux' >!< os_product) audit(AUDIT_OS_NOT, 'CentOS Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS Linux');
if (! preg(pattern:"^6([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'CentOS Linux 6', 'CentOS Linux ' + os_version);

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

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


var constraints = [
  {
    'release': '6',
    'pkgs': [
      {'reference':'mysql-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-bench-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-devel-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'i686', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-devel-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-embedded-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'i686', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-embedded-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-embedded-devel-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'i686', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-embedded-devel-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-libs-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'i686', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-libs-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-server-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mysql-test-5.1.73-8.0.1.el6_8.tuxcare.els4', 'cpu':'x86_64', 'el_string':'el6_8', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['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(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!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 (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, 'mysql / mysql-bench / mysql-devel / mysql-embedded / etc');
}