SUSE SLES12 Security Update : kernel (SUSE-SU-2019:2953-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:2953-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(130951);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/11");

  script_cve_id(
    "CVE-2018-12207",
    "CVE-2019-10220",
    "CVE-2019-11135",
    "CVE-2019-16232",
    "CVE-2019-16233",
    "CVE-2019-16234",
    "CVE-2019-16995",
    "CVE-2019-17055",
    "CVE-2019-17056",
    "CVE-2019-17133",
    "CVE-2019-17666",
    "CVE-2019-18805"
  );

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2019:2953-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The SUSE Linux Enterprise 15-SP1 Azure Kernel was updated to receive
various security and bugfixes.

The following security bugs were fixed :

CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit
a race condition in the Instruction Fetch Unit of the Intel CPU to
cause a Machine Exception during Page Size Change, causing the CPU
core to be non-functional.

The Linux Kernel kvm hypervisor was adjusted to avoid page size
changes in executable pages by splitting / merging huge pages into
small pages as More information can be found on
https://www.suse.com/support/kb/doc/?id=7023735 (bnc#1117665 1152505
1155812 1155817 1155945) CVE-2019-11135: Aborting an asynchronous TSX
operation on Intel CPUs with Transactional Memory support could be
used to facilitate sidechannel information leaks out of
microarchitectural buffers, similar to the previously described
'Microarchitectural Data Sampling' attack.

The Linux kernel was supplemented with the option to disable
TSX operation altogether (requiring CPU Microcode updates on
older systems) and better flushing of microarchitectural
buffers (VERW).

The set of options available is described in our TID at
https://www.suse.com/support/kb/doc/?id=7024251 (bnc#1139073
1152497 1152505 1152506). CVE-2019-18805: There was a signed
integer overflow in tcp_ack_update_rtt() when userspace
writes a very large integer to
/proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of
service or possibly unspecified other impact, aka
CID-19fad20d15a6 (bnc#1156187).

CVE-2019-17055: The AF_NFC network module did not enforce CAP_NET_RAW,
which meant that unprivileged users could create a raw socket
(bnc#1152782).

CVE-2019-16995: Fix a memory leak in hsr_dev_finalize() if
hsr_add_port failed to add a port, which may have caused denial of
service (bsc#1152685).

CVE-2019-16233: drivers/scsi/qla2xxx/qla_os.c did not check the
alloc_workqueue return value, leading to a NULL pointer dereference.
(bsc#1150457).

CVE-2019-10220: Added sanity checks on the pathnames passed to the
user space. (bsc#1144903).

CVE-2019-17666: rtlwifi: Fix potential overflow in P2P code
(bsc#1154372).

CVE-2019-16232: Fix a potential NULL pointer dereference in the
Marwell libertas driver (bsc#1150465).

CVE-2019-16234: iwlwifi pcie driver did not check the alloc_workqueue
return value, leading to a NULL pointer dereference. (bsc#1150452).

CVE-2019-17133: cfg80211 wireless extension did not reject a long SSID
IE, leading to a Buffer Overflow (bsc#1153158).

CVE-2019-17056: The AF_NFC network module did not enforce CAP_NET_RAW,
which meant that unprivileged users could create a raw socket
(bsc#1152788).

The update package also includes non-security fixes. See advisory for
details.

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.");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=998153");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-12207/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-10220/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-11135/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-16232/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-16233/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-16234/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-16995/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-17055/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-17056/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-17133/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-17666/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18805/");
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  # https://www.suse.com/support/update/announcement/2019/suse-su-20192953-1/
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  script_set_attribute(attribute:"solution", value:
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installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 12-SP4:zypper in -t patch
SUSE-SLE-SERVER-12-SP4-2019-2953=1");
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}


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);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-base-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-base-debuginfo-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-debuginfo-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-debugsource-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-azure-devel-4.12.14-6.29.1")) flag++;
if (rpm_check(release:"SLES12", sp:"4", cpu:"x86_64", reference:"kernel-syms-azure-4.12.14-6.29.1")) 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, "kernel");
}