SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0688-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:0688-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(134624);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/21");

  script_cve_id("CVE-2020-2732", "CVE-2020-8648", "CVE-2020-8992");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0688-1)");

  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 kernel-RT was updated to 4.12.14 to
receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-8992: Fixed an issue in ext4_protect_reserved_inode in
fs/ext4/block_validity.c that allowed attackers to cause a soft lockup
via a crafted journal size (bsc#1164069).

CVE-2020-8648: Fixed a use-after-free vulnerability in the
n_tty_receive_buf_common function in drivers/tty/n_tty.c
(bsc#1162928).

CVE-2020-2732: Fixed an issue affecting Intel CPUs where an L2 guest
may trick the L0 hypervisor into accessing sensitive L1 resources
(bsc#1163971).

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=1160979");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1161360");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1162928");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1162943");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1163206");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1163384");
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  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-2732/");
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  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-8992/");
  # https://www.suse.com/support/update/announcement/2020/suse-su-20200688-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e06145ac");
  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 Module for Realtime 15-SP1:zypper in -t patch
SUSE-SLE-Module-RT-15-SP1-2020-688=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools
15-SP1:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-688=1");
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  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8648");

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  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/06");
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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:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "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 == "SLES15" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP1", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-base-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-base-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-debugsource-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-devel-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-extra-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-extra-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt-livepatch-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-base-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-base-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-debugsource-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-devel-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-extra-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-extra-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-livepatch-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kernel-syms-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"cluster-md-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"dlm-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"gfs2-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt-debugsource-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt-extra-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt-extra-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt-livepatch-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-base-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-base-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-debugsource-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-extra-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-extra-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kernel-rt_debug-livepatch-devel-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"kselftests-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"ocfs2-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt-debuginfo-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt_debug-4.12.14-14.20.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"x86_64", reference:"reiserfs-kmp-rt_debug-debuginfo-4.12.14-14.20.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}