Amazon Linux AMI : 389-ds-base (ALAS-2015-501)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2015-501.
#

include("compat.inc");

if (description)
{
  script_id(82508);
  script_version("1.2");
  script_cvs_date("Date: 2018/04/18 15:09:35");

  script_cve_id("CVE-2014-8105", "CVE-2014-8112");
  script_xref(name:"ALAS", value:"2015-501");

  script_name(english:"Amazon Linux AMI : 389-ds-base (ALAS-2015-501)");
  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:
"An information disclosure flaw was found in the way the 389 Directory
Server stored information in the Changelog that is exposed via the
'cn=changelog' LDAP sub-tree. An unauthenticated user could in certain
cases use this flaw to read data from the Changelog, which could
include sensitive information such as plain-text passwords.
(CVE-2014-8105)

It was found that when the nsslapd-unhashed-pw-switch 389 Directory
Server configuration option was set to 'off', it did not prevent the
writing of unhashed passwords into the Changelog. This could
potentially allow an authenticated user able to access the Changelog
to read sensitive information. (CVE-2014-8112)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2015-501.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update 389-ds-base' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/04/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/04/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2018 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:"389-ds-base-1.3.2.27-1.27.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-debuginfo-1.3.2.27-1.27.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-devel-1.3.2.27-1.27.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-libs-1.3.2.27-1.27.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, "389-ds-base / 389-ds-base-debuginfo / 389-ds-base-devel / etc");
}