CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
AI Score
Confidence
Low
EPSS
Percentile
74.6%
The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed :
CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
CVE-2020-15437: Fixed a NULL pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).
CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178123).
CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter() (bsc#1178393).
CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).
CVE-2020-25705: Fixed an issue which could have allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization (bsc#1175721).
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-2020:3717-1.
# The text itself is copyright (C) SUSE.
#
include('compat.inc');
if (description)
{
script_id(143860);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/05");
script_cve_id(
"CVE-2020-15436",
"CVE-2020-15437",
"CVE-2020-25668",
"CVE-2020-25669",
"CVE-2020-25704",
"CVE-2020-25705",
"CVE-2020-27777",
"CVE-2020-28915",
"CVE-2020-28974",
"CVE-2020-29371"
);
script_xref(name:"CEA-ID", value:"CEA-2020-0138");
script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1)");
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-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c
which could have allowed local users to gain privileges or cause a
denial of service (bsc#1179141).
CVE-2020-15437: Fixed a NULL pointer dereference which could have
allowed local users to cause a denial of service(bsc#1179140).
CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op
(bsc#1178123).
CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit()
(bsc#1178182).
CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter()
(bsc#1178393).
CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)
CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could
have been used by local attackers to read kernel memory (bsc#1178886).
CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could
have been used by local attackers to read privileged information or
potentially crash the kernel (bsc#1178589).
CVE-2020-29371: Fixed uninitialized memory leaks to userspace
(bsc#1179429).
CVE-2020-25705: Fixed an issue which could have allowed to quickly
scan open UDP ports. This flaw allowed an off-path remote user to
effectively bypassing source port UDP randomization (bsc#1175721).
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=1050549");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1067665");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1111666");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1112178");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158775");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1170139");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1170630");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1172542");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1172873");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1174726");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1175306");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1175721");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1175916");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1176109");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1176855");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1176983");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177304");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177397");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177703");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177805");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177808");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177809");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177819");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1177820");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178123");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178182");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178393");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178589");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178607");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178635");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178669");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178686");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178765");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178782");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178838");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178853");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178854");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178878");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178886");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178897");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178940");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1178962");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179107");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179140");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179141");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179211");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179213");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179259");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179424");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179426");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179427");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1179429");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=927455");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-15436/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-15437/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25668/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25669/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25704/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25705/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-27777/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-28915/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-28974/");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-29371/");
# https://www.suse.com/support/update/announcement/2020/suse-su-20203717-1
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9106a420");
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-SP5-2020-3717=1
SUSE Linux Enterprise Software Development Kit 12-SP5 :
zypper in -t patch SUSE-SLE-SDK-12-SP5-2020-3717=1
SUSE Linux Enterprise Server 12-SP5 :
zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-3717=1
SUSE Linux Enterprise Live Patching 12-SP5 :
zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2020-3717=1
SUSE Linux Enterprise High Availability 12-SP5 :
zypper in -t patch SUSE-SLE-HA-12-SP5-2020-3717=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-2020-27777");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-25669");
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:"2020/11/17");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/09");
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-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-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", cpu:"s390x", reference:"kernel-default-man-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-base-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-base-debuginfo-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-debuginfo-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-debugsource-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-default-devel-4.12.14-122.54.1")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"kernel-syms-4.12.14-122.54.1")) 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");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15436
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15437
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25668
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25669
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25704
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25705
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27777
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28915
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28974
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29371
www.nessus.org/u?9106a420
bugzilla.suse.com/show_bug.cgi?id=1050549
bugzilla.suse.com/show_bug.cgi?id=1067665
bugzilla.suse.com/show_bug.cgi?id=1111666
bugzilla.suse.com/show_bug.cgi?id=1112178
bugzilla.suse.com/show_bug.cgi?id=1158775
bugzilla.suse.com/show_bug.cgi?id=1170139
bugzilla.suse.com/show_bug.cgi?id=1170630
bugzilla.suse.com/show_bug.cgi?id=1172542
bugzilla.suse.com/show_bug.cgi?id=1172873
bugzilla.suse.com/show_bug.cgi?id=1174726
bugzilla.suse.com/show_bug.cgi?id=1175306
bugzilla.suse.com/show_bug.cgi?id=1175721
bugzilla.suse.com/show_bug.cgi?id=1175916
bugzilla.suse.com/show_bug.cgi?id=1176109
bugzilla.suse.com/show_bug.cgi?id=1176855
bugzilla.suse.com/show_bug.cgi?id=1176983
bugzilla.suse.com/show_bug.cgi?id=1177304
bugzilla.suse.com/show_bug.cgi?id=1177397
bugzilla.suse.com/show_bug.cgi?id=1177703
bugzilla.suse.com/show_bug.cgi?id=1177805
bugzilla.suse.com/show_bug.cgi?id=1177808
bugzilla.suse.com/show_bug.cgi?id=1177809
bugzilla.suse.com/show_bug.cgi?id=1177819
bugzilla.suse.com/show_bug.cgi?id=1177820
bugzilla.suse.com/show_bug.cgi?id=1178123
bugzilla.suse.com/show_bug.cgi?id=1178182
bugzilla.suse.com/show_bug.cgi?id=1178393
bugzilla.suse.com/show_bug.cgi?id=1178589
bugzilla.suse.com/show_bug.cgi?id=1178607
bugzilla.suse.com/show_bug.cgi?id=1178635
bugzilla.suse.com/show_bug.cgi?id=1178669
bugzilla.suse.com/show_bug.cgi?id=1178686
bugzilla.suse.com/show_bug.cgi?id=1178765
bugzilla.suse.com/show_bug.cgi?id=1178782
bugzilla.suse.com/show_bug.cgi?id=1178838
bugzilla.suse.com/show_bug.cgi?id=1178853
bugzilla.suse.com/show_bug.cgi?id=1178854
bugzilla.suse.com/show_bug.cgi?id=1178878
bugzilla.suse.com/show_bug.cgi?id=1178886
bugzilla.suse.com/show_bug.cgi?id=1178897
bugzilla.suse.com/show_bug.cgi?id=1178940
bugzilla.suse.com/show_bug.cgi?id=1178962
bugzilla.suse.com/show_bug.cgi?id=1179107
bugzilla.suse.com/show_bug.cgi?id=1179140
bugzilla.suse.com/show_bug.cgi?id=1179141
bugzilla.suse.com/show_bug.cgi?id=1179211
bugzilla.suse.com/show_bug.cgi?id=1179213
bugzilla.suse.com/show_bug.cgi?id=1179259
bugzilla.suse.com/show_bug.cgi?id=1179424
bugzilla.suse.com/show_bug.cgi?id=1179426
bugzilla.suse.com/show_bug.cgi?id=1179427
bugzilla.suse.com/show_bug.cgi?id=1179429
bugzilla.suse.com/show_bug.cgi?id=927455
www.suse.com/security/cve/CVE-2020-15436/
www.suse.com/security/cve/CVE-2020-15437/
www.suse.com/security/cve/CVE-2020-25668/
www.suse.com/security/cve/CVE-2020-25669/
www.suse.com/security/cve/CVE-2020-25704/
www.suse.com/security/cve/CVE-2020-25705/
www.suse.com/security/cve/CVE-2020-27777/
www.suse.com/security/cve/CVE-2020-28915/
www.suse.com/security/cve/CVE-2020-28974/
www.suse.com/security/cve/CVE-2020-29371/
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
AI Score
Confidence
Low
EPSS
Percentile
74.6%