SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1602-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:1602-1.
# The text itself is copyright (C) SUSE.
#

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if (description)
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  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/06");

  script_cve_id(
    "CVE-2018-1000199",
    "CVE-2019-9455",
    "CVE-2019-19462",
    "CVE-2019-20806",
    "CVE-2019-20812",
    "CVE-2020-0543",
    "CVE-2020-10690",
    "CVE-2020-10711",
    "CVE-2020-10720",
    "CVE-2020-10732",
    "CVE-2020-10751",
    "CVE-2020-10757",
    "CVE-2020-12114",
    "CVE-2020-12464",
    "CVE-2020-12652",
    "CVE-2020-12653",
    "CVE-2020-12654",
    "CVE-2020-12655",
    "CVE-2020-12656",
    "CVE-2020-12657",
    "CVE-2020-12659",
    "CVE-2020-12768",
    "CVE-2020-12769",
    "CVE-2020-13143"
  );

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1602-1)");

  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 12 SP5 kernel was updated to receive various
security and bugfixes.

The following security bugs were fixed :

CVE-2020-0543: Fixed a side channel attack against special registers
which could have resulted in leaking of read values to cores other
than the one which called it. This attack is known as Special Register
Buffer Data Sampling (SRBDS) or 'CrossTalk' (bsc#1154824).

CVE-2020-13143: Fixed an out-of-bounds read in
gadget_dev_desc_UDC_store in drivers/usb/gadget/configfs.c
(bsc#1171982).

CVE-2020-12769: Fixed an issue which could have allowed attackers to
cause a panic via concurrent calls to dw_spi_irq and
dw_spi_transfer_one (bsc#1171983).

CVE-2020-12768: Fixed a memory leak in svm_cpu_uninit in
arch/x86/kvm/svm.c (bsc#1171736).

CVE-2020-12659: Fixed an out-of-bounds write (by a user with the
CAP_NET_ADMIN capability) due to improper headroom validation
(bsc#1171214).

CVE-2020-12657: An a use-after-free in block/bfq-iosched.c
(bsc#1171205).

CVE-2020-12656: Fixed an improper handling of certain domain_release
calls leadingch could have led to a memory leak (bsc#1171219).

CVE-2020-12655: Fixed an issue which could have allowed attackers to
trigger a sync of excessive duration via an XFS v5 image with crafted
metadata (bsc#1171217).

CVE-2020-12654: Fixed an issue in he wifi driver which could have
allowed a remote AP to trigger a heap-based buffer overflow
(bsc#1171202).

CVE-2020-12653: Fixed an issue in the wifi driver which could have
allowed local users to gain privileges or cause a denial of service
(bsc#1171195).

CVE-2020-12652: Fixed an issue which could have allowed local users to
hold an incorrect lock during the ioctl operation and trigger a race
condition (bsc#1171218).

CVE-2020-12464: Fixed a use-after-free due to a transfer without a
reference (bsc#1170901).

CVE-2020-12114: Fixed a pivot_root race condition which could have
allowed local users to cause a denial of service (panic) by corrupting
a mountpoint reference counter (bsc#1171098).

CVE-2020-10757: Fixed an issue where remaping hugepage DAX to anon
mmap could have caused user PTE access (bsc#1172317).

CVE-2020-10751: Fixed an improper implementation in SELinux LSM hook
where it was assumed that an skb would only contain a single netlink
message (bsc#1171189).

CVE-2020-10732: Fixed kernel data leak in userspace coredumps due to
uninitialized data (bsc#1171220).

CVE-2020-10720: Fixed a use-after-free read in napi_gro_frags()
(bsc#1170778).

CVE-2020-10711: Fixed a NULL pointer dereference in SELinux subsystem
which could have allowed a remote network user to crash the kernel
resulting in a denial of service (bsc#1171191).

CVE-2020-10690: Fixed the race between the release of ptp_clock and
cdev (bsc#1170056).

CVE-2019-9455: Fixed a pointer leak due to a WARN_ON statement in a
video driver. This could lead to local information disclosure with
System execution privileges needed (bsc#1170345).

CVE-2019-20812: Fixed an issue in prb_calc_retire_blk_tmo() which
could have resulted in a denial of service (bsc#1172453).

CVE-2019-20806: Fixed a NULL pointer dereference which may had lead to
denial of service (bsc#1172199).

CVE-2019-19462: Fixed an issue which could have allowed local user to
cause denial of service (bsc#1158265).

CVE-2018-1000199: Fixed a potential local code execution via ptrace
(bsc#1089895).

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://www.suse.com/security/cve/CVE-2020-10720/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-10732/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-10751/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-10757/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12114/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12464/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12652/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12653/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12654/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12655/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12656/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12657/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12659/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12768/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-12769/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-13143/");
  # https://www.suse.com/support/update/announcement/2020/suse-su-20201602-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a75ac3a9");
  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 Workstation Extension 12-SP5 :

zypper in -t patch SUSE-SLE-WE-12-SP5-2020-1602=1

SUSE Linux Enterprise Software Development Kit 12-SP5 :

zypper in -t patch SUSE-SLE-SDK-12-SP5-2020-1602=1

SUSE Linux Enterprise Server 12-SP5 :

zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-1602=1

SUSE Linux Enterprise Live Patching 12-SP5 :

zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2020-1602=1

SUSE Linux Enterprise High Availability 12-SP5 :

zypper in -t patch SUSE-SLE-HA-12-SP5-2020-1602=1");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-12659");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-12657");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-devel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-man");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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", cpu:"x86_64", reference:"kernel-default-devel-debuginfo-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", cpu:"s390x", reference:"kernel-default-man-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-base-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-base-debuginfo-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-debuginfo-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-debugsource-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-devel-4.12.14-122.23.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-syms-4.12.14-122.23.1")) 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");
}