4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
39.5%
The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed :
CVE-2020-25285: A race condition between hugetlb sysctl handlers in mm/hugetlb.c could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact (bnc#1176485).
CVE-2020-16120: Fixed permission check to open real file when using overlayfs. It was possible to have a file not readable by an unprivileged user be copied to a mountpoint controlled by that user and then be able to access the file. (bsc#1177470)
CVE-2020-14351: Fixed a race condition in the perf_mmap_close() function (bsc#1177086).
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-2020:3122-1.
# The text itself is copyright (C) SUSE.
#
include('compat.inc');
if (description)
{
script_id(143621);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/06");
script_cve_id("CVE-2020-14351", "CVE-2020-16120", "CVE-2020-25285");
script_name(english:"SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3122-1)");
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 SP2 kernel was updated to receive various
security and bugfixes.
The following security bugs were fixed :
CVE-2020-25285: A race condition between hugetlb sysctl handlers in
mm/hugetlb.c could be used by local attackers to corrupt memory, cause
a NULL pointer dereference, or possibly have unspecified other impact
(bnc#1176485).
CVE-2020-16120: Fixed permission check to open real file when using
overlayfs. It was possible to have a file not readable by an
unprivileged user be copied to a mountpoint controlled by that user
and then be able to access the file. (bsc#1177470)
CVE-2020-14351: Fixed a race condition in the perf_mmap_close()
function (bsc#1177086).
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.");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1055014");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1055186");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1061843");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1065729");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1077428");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1129923");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1134760");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1152489");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1174748");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1174969");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1175052");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1175898");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1176485");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1176713");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177086");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177353");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177410");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177411");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177470");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177739");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177749");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177750");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177754");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177755");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177765");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177814");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177817");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177854");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177855");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177856");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177861");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178002");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178079");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178246");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-14351/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-16120/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25285/");
# https://www.suse.com/support/update/announcement/2020/suse-su-20203122-1
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a311d51b");
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 15-SP2 :
zypper in -t patch SUSE-SLE-Product-WE-15-SP2-2020-3122=1
SUSE Linux Enterprise Module for Live Patching 15-SP2 :
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2020-3122=1
SUSE Linux Enterprise Module for Legacy Software 15-SP2 :
zypper in -t patch SUSE-SLE-Module-Legacy-15-SP2-2020-3122=1
SUSE Linux Enterprise Module for Development Tools 15-SP2 :
zypper in -t patch
SUSE-SLE-Module-Development-Tools-15-SP2-2020-3122=1
SUSE Linux Enterprise Module for Basesystem 15-SP2 :
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2020-3122=1
SUSE Linux Enterprise High Availability 15-SP2 :
zypper in -t patch SUSE-SLE-Product-HA-15-SP2-2020-3122=1");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-14351");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/13");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/09");
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-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-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-preempt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-preempt-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-preempt-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-preempt-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-preempt-devel-debuginfo");
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: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:"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:"^(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:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP2", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP2", os_ver + " SP" + sp);
flag = 0;
if (rpm_check(release:"SLES15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-devel-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-devel-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-base-5.3.18-24.34.1.9.11.2")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-devel-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-default-devel-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-obs-build-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-obs-build-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"kernel-syms-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"reiserfs-kmp-default-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"reiserfs-kmp-default-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-devel-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", cpu:"x86_64", reference:"kernel-preempt-devel-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-base-5.3.18-24.34.1.9.11.2")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-devel-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-default-devel-debuginfo-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-obs-build-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-obs-build-debugsource-5.3.18-24.34.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"kernel-syms-5.3.18-24.34.1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | kernel-default | p-cpe:/a:novell:suse_linux:kernel-default |
novell | suse_linux | kernel-default-base | p-cpe:/a:novell:suse_linux:kernel-default-base |
novell | suse_linux | kernel-default-debuginfo | p-cpe:/a:novell:suse_linux:kernel-default-debuginfo |
novell | suse_linux | kernel-default-debugsource | p-cpe:/a:novell:suse_linux:kernel-default-debugsource |
novell | suse_linux | kernel-default-devel | p-cpe:/a:novell:suse_linux:kernel-default-devel |
novell | suse_linux | kernel-default-devel-debuginfo | p-cpe:/a:novell:suse_linux:kernel-default-devel-debuginfo |
novell | suse_linux | kernel-obs-build | p-cpe:/a:novell:suse_linux:kernel-obs-build |
novell | suse_linux | kernel-obs-build-debugsource | p-cpe:/a:novell:suse_linux:kernel-obs-build-debugsource |
novell | suse_linux | kernel-preempt | p-cpe:/a:novell:suse_linux:kernel-preempt |
novell | suse_linux | kernel-preempt-debuginfo | p-cpe:/a:novell:suse_linux:kernel-preempt-debuginfo |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14351
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16120
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25285
www.nessus.org/u?a311d51b
bugzilla.suse.com/show_bug.cgi?id=1055014
bugzilla.suse.com/show_bug.cgi?id=1055186
bugzilla.suse.com/show_bug.cgi?id=1061843
bugzilla.suse.com/show_bug.cgi?id=1065729
bugzilla.suse.com/show_bug.cgi?id=1077428
bugzilla.suse.com/show_bug.cgi?id=1129923
bugzilla.suse.com/show_bug.cgi?id=1134760
bugzilla.suse.com/show_bug.cgi?id=1152489
bugzilla.suse.com/show_bug.cgi?id=1174748
bugzilla.suse.com/show_bug.cgi?id=1174969
bugzilla.suse.com/show_bug.cgi?id=1175052
bugzilla.suse.com/show_bug.cgi?id=1175898
bugzilla.suse.com/show_bug.cgi?id=1176485
bugzilla.suse.com/show_bug.cgi?id=1176713
bugzilla.suse.com/show_bug.cgi?id=1177086
bugzilla.suse.com/show_bug.cgi?id=1177353
bugzilla.suse.com/show_bug.cgi?id=1177410
bugzilla.suse.com/show_bug.cgi?id=1177411
bugzilla.suse.com/show_bug.cgi?id=1177470
bugzilla.suse.com/show_bug.cgi?id=1177739
bugzilla.suse.com/show_bug.cgi?id=1177749
bugzilla.suse.com/show_bug.cgi?id=1177750
bugzilla.suse.com/show_bug.cgi?id=1177754
bugzilla.suse.com/show_bug.cgi?id=1177755
bugzilla.suse.com/show_bug.cgi?id=1177765
bugzilla.suse.com/show_bug.cgi?id=1177814
bugzilla.suse.com/show_bug.cgi?id=1177817
bugzilla.suse.com/show_bug.cgi?id=1177854
bugzilla.suse.com/show_bug.cgi?id=1177855
bugzilla.suse.com/show_bug.cgi?id=1177856
bugzilla.suse.com/show_bug.cgi?id=1177861
bugzilla.suse.com/show_bug.cgi?id=1178002
bugzilla.suse.com/show_bug.cgi?id=1178079
bugzilla.suse.com/show_bug.cgi?id=1178246
www.suse.com/security/cve/CVE-2020-14351/
www.suse.com/security/cve/CVE-2020-16120/
www.suse.com/security/cve/CVE-2020-25285/
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
39.5%