Amazon Linux AMI : mysql56 (ALAS-2019-1296)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2019-1296.
#

include("compat.inc");

if (description)
{
  script_id(129566);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/23");

  script_cve_id("CVE-2019-2739", "CVE-2019-2740", "CVE-2019-2819");
  script_xref(name:"ALAS", value:"2019-1296");

  script_name(english:"Amazon Linux AMI : mysql56 (ALAS-2019-1296)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Vulnerability in the MySQL Server component of Oracle MySQL
(subcomponent: Server: Security: Privileges). Supported versions that
are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and
prior. Easily exploitable 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 as well as
unauthorized update, insert or delete access to some of MySQL Server
accessible data. CVSS 3.0 Base Score 5.1 (Integrity and Availability
impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).
(CVE-2019-2739)

Vulnerability in the MySQL Server component of Oracle MySQL
(subcomponent: Server: Security: Audit). Supported versions that are
affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 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 as well as unauthorized update, insert or delete
access to some of MySQL Server accessible data. CVSS 3.0 Base Score
5.5 (Integrity and Availability impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H). (CVE-2019-2819)

Vulnerability in the MySQL Server component of Oracle MySQL
(subcomponent: Server: XML). Supported versions that are affected are
5.6.44 and prior, 5.7.26 and prior and 8.0.16 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. CVSS 3.0 Base Score 6.5 (Availability impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). (CVE-2019-2740)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2019-1296.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update mysql56' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:P");
  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:H/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-2019-2819");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-bench");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-embedded");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-embedded-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-errmsg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:mysql56-test");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/04");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  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);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
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);


flag = 0;
if (rpm_check(release:"ALA", reference:"mysql56-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-bench-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-common-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-debuginfo-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-devel-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-embedded-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-embedded-devel-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-errmsg-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-libs-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-server-5.6.45-1.34.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"mysql56-test-5.6.45-1.34.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "mysql56 / mysql56-bench / mysql56-common / mysql56-debuginfo / etc");
}