Amazon Linux AMI : nss (ALAS-2014-385)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2014-385.
#

include("compat.inc");

if (description)
{
  script_id(78328);
  script_version("1.3");
  script_cvs_date("Date: 2018/04/18 15:09:35");

  script_cve_id("CVE-2014-1544");
  script_xref(name:"ALAS", value:"2014-385");

  script_name(english:"Amazon Linux AMI : nss (ALAS-2014-385)");
  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:
"Use-after-free vulnerability in the CERT_DestroyCertificate function
in libnss3.so in Mozilla Network Security Services (NSS) 3.x, as used
in Firefox before 31.0, Firefox ESR 24.x before 24.7, and Thunderbird
before 24.7, allows remote attackers to execute arbitrary code via
vectors that trigger certain improper removal of an NSSCertificate
structure from a trust domain."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2014-385.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update nss' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:nss-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");
  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:"nss-3.16.0-1.36.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-debuginfo-3.16.0-1.36.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-devel-3.16.0-1.36.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-pkcs11-devel-3.16.0-1.36.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-sysinit-3.16.0-1.36.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"nss-tools-3.16.0-1.36.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nss / nss-debuginfo / nss-devel / nss-pkcs11-devel / nss-sysinit / etc");
}