RHEL 7 : Storage Server (RHSA-2019:1966)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:1966. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127638);
  script_version("1.6");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2019-3880");
  script_xref(name:"RHSA", value:"2019:1966");

  script_name(english:"RHEL 7 : Storage Server (RHSA-2019:1966)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated samba packages that fix one security issue and provide several
bug fixes and enhancements are now available for Red Hat Gluster
Storage 3.4 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Moderate. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Samba is an open source implementation of the Server Message Block
(SMB) protocol and the related Common Internet File System (CIFS)
protocol, which allow PC-compatible machines to share files, printers,
and various information.

Security Fix(es) :

* samba: save registry file outside share as unprivileged user
(CVE-2019-3880)

For more details about the security issue(s), including the impact, a
CVSS the score and other related information refer to the CVE page(s)
listed in the References section.

Bug Fix(es) :

* The samba and CTDB packages have been upgraded to upstream version
4.9.8, which provide a number of bug fixes and enhancements over the
previous release, including numerous changes to the CTDB
configuration. See the Solution section for a link to the Knowledge
Base article to aid in migration. (BZ#1703030)

Users of Samba with Red Hat Gluster Storage are advised to upgrade to
these updated packages."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2019:1966"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-3880"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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:L/UI:N/S:U/C:N/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  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:redhat:enterprise_linux:ctdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libsmbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libsmbclient-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtalloc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtalloc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtalloc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtdb-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtdb-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtevent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtevent-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libtevent-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libwbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libwbclient-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pytalloc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pytalloc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-tdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-tevent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-client-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-common-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-common-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-dc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-dc-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-krb5-printing");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-pidl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-vfs-glusterfs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-winbind-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-winbind-krb5-locator");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-winbind-modules");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tdb-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:1966";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;

  if (! (rpm_exists(release:"RHEL7", rpm:"glusterfs-server-"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "GlusterFS Server");

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"ctdb-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libsmbclient-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libsmbclient-devel-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtalloc-2.1.14-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtalloc-debuginfo-2.1.14-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtalloc-devel-2.1.14-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtdb-1.3.16-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtdb-debuginfo-1.3.16-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtdb-devel-1.3.16-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtevent-0.9.37-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtevent-debuginfo-0.9.37-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libtevent-devel-0.9.37-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libwbclient-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"libwbclient-devel-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"pytalloc-2.1.14-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"pytalloc-devel-2.1.14-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"python-tdb-1.3.16-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"python-tevent-0.9.37-3.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-client-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-client-libs-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", reference:"samba-common-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-common-libs-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-common-tools-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-dc-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-dc-libs-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-debuginfo-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-devel-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-krb5-printing-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-libs-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", reference:"samba-pidl-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-python-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-vfs-glusterfs-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-winbind-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-winbind-clients-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-winbind-krb5-locator-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"samba-winbind-modules-4.9.8-105.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"tdb-tools-1.3.16-3.el7")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ctdb / libsmbclient / libsmbclient-devel / libtalloc / etc");
  }
}