SUSE SLES12 Security Update : bind (SUSE-SU-2020:1914-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:1914-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(138545);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/13");

  script_cve_id("CVE-2018-5741", "CVE-2020-8616", "CVE-2020-8617");

  script_name(english:"SUSE SLES12 Security Update : bind (SUSE-SU-2020:1914-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"This update for bind fixes the following issues :

Amended documentation referring to rule types 'krb5-subdomain' and
'ms-subdomain'. This incorrect documentation could mislead operators
into believing that policies they had configured were more restrictive
than they actually were. [CVE-2018-5741]

Further limit the number of queries that can be triggered from a
request. Root and TLD servers are no longer exempt from
max-recursion-queries. Fetches for missing name server address records
are limited to 4 for any domain. [CVE-2020-8616]

Replaying a TSIG BADTIME response as a request could trigger an
assertion failure. [CVE-2020-8617] [bsc#1109160, bsc#1171740,
CVE-2018-5741, bind-CVE-2018-5741.patch, CVE-2020-8616,
bind-CVE-2020-8616.patch, CVE-2020-8617, bind-CVE-2020-8617.patch]

Don't rely on /etc/insserv.conf anymore for proper dependencies
against nss-lookup.target in named.service and lwresd.service
(bsc#1118367 bsc#1118368)

Using a drop-in file

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1109160"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1118367"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1118368"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1171740"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-5741/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2020-8616/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2020-8617/"
  );
  # https://www.suse.com/support/update/announcement/2020/suse-su-20201914-1
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?fb506f62"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud Crowbar 8 :

zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2020-1914=1

SUSE OpenStack Cloud 8 :

zypper in -t patch SUSE-OpenStack-Cloud-8-2020-1914=1

SUSE OpenStack Cloud 7 :

zypper in -t patch SUSE-OpenStack-Cloud-7-2020-1914=1

SUSE Linux Enterprise Server for SAP 12-SP3 :

zypper in -t patch SUSE-SLE-SAP-12-SP3-2020-1914=1

SUSE Linux Enterprise Server for SAP 12-SP2 :

zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-1914=1

SUSE Linux Enterprise Server 12-SP3-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-2020-1914=1

SUSE Linux Enterprise Server 12-SP3-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2020-1914=1

SUSE Linux Enterprise Server 12-SP2-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-1914=1

SUSE Linux Enterprise Server 12-SP2-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-1914=1

SUSE Enterprise Storage 5 :

zypper in -t patch SUSE-Storage-5-2020-1914=1

HPE Helion Openstack 8 :

zypper in -t patch HPE-Helion-OpenStack-8-2020-1914=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-5741");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-chrootenv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:bind-utils-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/16");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-chrootenv-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-debuginfo-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-debugsource-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-libs-32bit-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-libs-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-libs-debuginfo-32bit-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-libs-debuginfo-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-utils-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"bind-utils-debuginfo-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-chrootenv-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-debuginfo-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-debugsource-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-libs-32bit-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-libs-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-libs-debuginfo-32bit-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-libs-debuginfo-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-utils-9.9.9P1-63.17.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"bind-utils-debuginfo-9.9.9P1-63.17.1")) 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, "bind");
}