SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0901-1)

2019-04-09T00:00:00
ID SUSE_SU-2019-0901-1.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-05-02T00:00:00

Description

The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.176 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc#1129179).

CVE-2019-9213: expand_downwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (bnc#1128166).

CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled reference counting because of a race condition, leading to a use-after-free. (bnc#1124728)

CVE-2019-3459, CVE-2019-3460: The Bluetooth stack suffered from two remote information leak vulnerabilities in the code that handles incoming L2cap configuration packets (bsc#1120758).

CVE-2019-7221: Fixed a use-after-free vulnerability in the KVM hypervisor related to the emulation of a preemption timer, allowing an guest user/process to crash the host kernel. (bsc#1124732).

CVE-2019-7222: Fixed an information leakage in the KVM hypervisor related to handling page fault exceptions, which allowed a guest user/process to use this flaw to leak the host

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:0901-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
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  script_version("1.6");
  script_cvs_date("Date: 2020/01/24");

  script_cve_id("CVE-2017-18249", "CVE-2019-2024", "CVE-2019-3459", "CVE-2019-3460", "CVE-2019-6974", "CVE-2019-7221", "CVE-2019-7222", "CVE-2019-9213");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0901-1)");
  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:
"The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.176
to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-2024: A use-after-free when disconnecting a source was fixed
which could lead to crashes. bnc#1129179).

CVE-2019-9213: expand_downwards in mm/mmap.c lacked a check for the
mmap minimum address, which made it easier for attackers to exploit
kernel NULL pointer dereferences on non-SMAP platforms. This is
related to a capability check for the wrong task (bnc#1128166).

CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c
mishandled reference counting because of a race condition, leading to
a use-after-free. (bnc#1124728)

CVE-2019-3459, CVE-2019-3460: The Bluetooth stack suffered from two
remote information leak vulnerabilities in the code that handles
incoming L2cap configuration packets (bsc#1120758).

CVE-2019-7221: Fixed a use-after-free vulnerability in the KVM
hypervisor related to the emulation of a preemption timer, allowing an
guest user/process to crash the host kernel. (bsc#1124732).

CVE-2019-7222: Fixed an information leakage in the KVM hypervisor
related to handling page fault exceptions, which allowed a guest
user/process to use this flaw to leak the host's stack memory contents
to a guest (bsc#1124735).

CVE-2017-18249: The add_free_nid function in fs/f2fs/node.c did not
properly track an allocated nid, which allowed local users to cause a
denial of service (race condition) or possibly have unspecified other
impact via concurrent threads (bnc#1087036).

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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    attribute:"see_also",
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    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1126772"
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    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
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    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1127155"
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1128166"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1128452"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1128565"
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    value:"https://bugzilla.suse.com/show_bug.cgi?id=1128893"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129080"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129179"
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    attribute:"see_also",
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129239"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129240"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129241"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129413"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129414"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129415"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129416"
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  script_set_attribute(
    attribute:"see_also",
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129770"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1129923"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-18249/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-2024/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-3459/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-3460/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-6974/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-7221/"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-7222/"
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  script_set_attribute(
    attribute:"see_also",
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  # https://www.suse.com/support/update/announcement/2019/suse-su-20190901-1/
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"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 Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2019-901=1"
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}


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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:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-base-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-base-debuginfo-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-debuginfo-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-debugsource-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-devel-4.4.176-4.25.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-syms-azure-4.4.176-4.25.1")) 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");
}