Amazon Linux AMI : mysql57 (ALAS-2021-1544)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2021-1544.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(154899);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/27");

  script_cve_id(
    "CVE-2021-2342",
    "CVE-2021-2356",
    "CVE-2021-2372",
    "CVE-2021-2385"
  );
  script_xref(name:"ALAS", value:"2021-1544");
  script_xref(name:"IAVA", value:"2021-A-0333-S");

  script_name(english:"Amazon Linux AMI : mysql57 (ALAS-2021-1544)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux AMI host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The version of mysql57 installed on the remote host is prior to 5.7.35-1.17. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS-2021-1544 advisory.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported
    versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Easily exploitable vulnerability
    allows high 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. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS
    Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H). (CVE-2021-2342)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Replication). Supported
    versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit 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. CVSS 3.1 Base Score 5.9 (Integrity and Availability impacts). CVSS
    Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H). (CVE-2021-2356)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are
    affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows high
    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. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H). (CVE-2021-2372)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Replication). Supported
    versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability
    allows high 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. CVSS 3.1 Base Score 5.0 (Integrity and Availability impacts). CVSS
    Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H). (CVE-2021-2385)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/ALAS-2021-1544.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-2342");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-2356");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-2372");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2021-2385");
  script_set_attribute(attribute:"solution", value:
"Run 'yum update mysql57' to update your system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-2385");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-2356");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-embedded");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-embedded-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-errmsg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql57-test");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Amazon Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

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

var release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
var os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'mysql57-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-common-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-common-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-debuginfo-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-debuginfo-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-devel-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-devel-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-embedded-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-embedded-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-embedded-devel-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-embedded-devel-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-errmsg-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-errmsg-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-libs-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-libs-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-server-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-server-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-test-5.7.35-1.17.amzn1', 'cpu':'i686', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'mysql57-test-5.7.35-1.17.amzn1', 'cpu':'x86_64', 'release':'ALA', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var allowmaj = 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['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['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (reference && release) {
    if (rpm_check(release:release, cpu:cpu, reference:reference, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, "mysql57 / mysql57-common / mysql57-debuginfo / etc");
}