SUSE SLES12 Security Update : dhcp (SUSE-SU-2019:2727-2)

2019-11-13T00:00:00
ID SUSE_SU-2019-2727-2.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2019-11-13T00:00:00

Description

This update for dhcp fixes the following issues :

Secuirty issue fixed :

CVE-2019-6470: Fixed DHCPv6 server crashes (bsc#1134078).

Bug fixes: Add compile option --enable-secs-byteorder to avoid duplicate lease warnings (bsc#1089524).

Use IPv6 when called as dhclient6, dhcpd6, and dhcrelay6 (bsc#1136572).

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:2727-2.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(130941);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/07");

  script_cve_id("CVE-2019-6470");
  script_xref(name:"IAVB", value:"2020-B-0036-S");

  script_name(english:"SUSE SLES12 Security Update : dhcp (SUSE-SU-2019:2727-2)");
  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 dhcp fixes the following issues :

Secuirty issue fixed :

CVE-2019-6470: Fixed DHCPv6 server crashes (bsc#1134078).

Bug fixes: Add compile option --enable-secs-byteorder to avoid
duplicate lease warnings (bsc#1089524).

Use IPv6 when called as dhclient6, dhcpd6, and dhcrelay6
(bsc#1136572).

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=1089524"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1134078"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1136572"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-6470/"
  );
  # https://www.suse.com/support/update/announcement/2019/suse-su-20192727-2/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1114be94"
  );
  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 Linux Enterprise Software Development Kit 12-SP5:zypper in -t
patch SUSE-SLE-SDK-12-SP5-2019-2727=1

SUSE Linux Enterprise Server 12-SP5:zypper in -t patch
SUSE-SLE-SERVER-12-SP5-2019-2727=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H");
  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:novell:suse_linux:dhcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-client-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-relay");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-relay-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dhcp-server-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2021 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:"^(5)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP5", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-client-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-client-debuginfo-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-debuginfo-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-debugsource-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-relay-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-relay-debuginfo-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-server-4.3.3-10.19.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"dhcp-server-debuginfo-4.3.3-10.19.1")) 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, "dhcp");
}