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This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2020-2575-1.NASL
HistorySep 10, 2020 - 12:00 a.m.

SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:2575-1)

2020-09-1000:00:00
This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
27

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165629).

CVE-2020-14314: Fixed a potential negative array index in do_split() (bsc#1173798).

CVE-2020-14356: Fixed a NULL pointer dereference in cgroupv2 subsystem which could have led to privilege escalation (bsc#1175213).

CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).

CVE-2020-16166: Fixed a potential issue which could have allowed remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG (bsc#1174757).

CVE-2020-24394: Fixed an issue which could set incorrect permissions on new filesystem objects when the filesystem lacks ACL support (bsc#1175518).

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication Bluetooth might have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access (bsc#1171988).

CVE-2020-14386: Fixed a potential local privilege escalation via memory corruption (bsc#1176069).

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.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:2575-1.
# The text itself is copyright (C) SUSE.
#

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security and bugfixes.

The following security bugs were fixed :

CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup
(bsc#1165629).

CVE-2020-14314: Fixed a potential negative array index in do_split()
(bsc#1173798).

CVE-2020-14356: Fixed a NULL pointer dereference in cgroupv2 subsystem
which could have led to privilege escalation (bsc#1175213).

CVE-2020-14331: Fixed a missing check in vgacon scrollback handling
(bsc#1174205).

CVE-2020-16166: Fixed a potential issue which could have allowed
remote attackers to make observations that help to obtain sensitive
information about the internal state of the network RNG (bsc#1174757).

CVE-2020-24394: Fixed an issue which could set incorrect permissions
on new filesystem objects when the filesystem lacks ACL support
(bsc#1175518).

CVE-2020-10135: Legacy pairing and secure-connections pairing
authentication Bluetooth might have allowed an unauthenticated user to
complete authentication without pairing credentials via adjacent
access (bsc#1171988).

CVE-2020-14386: Fixed a potential local privilege escalation via
memory corruption (bsc#1176069).

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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"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 15-SP1 :

zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2020-2575=1

SUSE Linux Enterprise Module for Live Patching 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2020-2575=1

SUSE Linux Enterprise Module for Legacy Software 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Legacy-15-SP1-2020-2575=1

SUSE Linux Enterprise Module for Development Tools 15-SP1 :

zypper in -t patch
SUSE-SLE-Module-Development-Tools-15-SP1-2020-2575=1

SUSE Linux Enterprise Module for Basesystem 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-2575=1

SUSE Linux Enterprise High Availability 15-SP1 :

zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2020-2575=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-2020-14386");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  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-obs-build");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-obs-build-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-zfcpdump-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:reiserfs-kmp-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:reiserfs-kmp-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/09/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020-2021 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:"^(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);

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:"s390x", reference:"kernel-default-man-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"s390x", reference:"kernel-zfcpdump-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", cpu:"s390x", reference:"kernel-zfcpdump-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-base-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-base-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-devel-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-default-devel-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-obs-build-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-obs-build-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"kernel-syms-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"reiserfs-kmp-default-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"reiserfs-kmp-default-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"s390x", reference:"kernel-default-man-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"s390x", reference:"kernel-zfcpdump-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", cpu:"s390x", reference:"kernel-zfcpdump-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-base-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-base-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-devel-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-default-devel-debuginfo-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-obs-build-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-obs-build-debugsource-4.12.14-197.56.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"kernel-syms-4.12.14-197.56.1")) 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");
}

References

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Related for SUSE_SU-2020-2575-1.NASL