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nessusThis script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2019-1948-1.NASL
HistoryJul 24, 2019 - 12:00 a.m.

SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1948-1) (SACK Panic) (SACK Slowness)

2019-07-2400:00:00
This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
29

8.8 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.7 High

AI Score

Confidence

High

8.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:N/C:C/I:C/A:C

0.972 High

EPSS

Percentile

99.8%

This update for the Linux Kernel 4.4.121-92_104 fixes several issues.

The following security issues were fixed :

CVE-2019-11477: Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. (bsc#1137586)

CVE-2019-11478: Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. (bsc#1137586)

CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network (bsc#1136424).

This update contains a regression fix for CVE-2019-11477 and CVE-2019-11478 (bsc#1140747).

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-2019:1948-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(126983);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/08");

  script_cve_id("CVE-2019-11477", "CVE-2019-11478", "CVE-2019-3846");
  script_xref(name:"CEA-ID", value:"CEA-2019-0456");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1948-1) (SACK Panic) (SACK Slowness)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"This update for the Linux Kernel 4.4.121-92_104 fixes several issues.

The following security issues were fixed :

CVE-2019-11477: Jonathan Looney discovered that the
TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow
when handling TCP Selective Acknowledgments (SACKs). A remote attacker
could use this to cause a denial of service. (bsc#1137586)

CVE-2019-11478: Jonathan Looney discovered that the TCP retransmission
queue implementation in tcp_fragment could be fragmented when handling
certain TCP Selective Acknowledgment (SACK) sequences. A remote
attacker could use this to cause a denial of service. (bsc#1137586)

CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and
possibly escalate privileges was found in the mwifiex kernel module
while connecting to a malicious wireless network (bsc#1136424).

This update contains a regression fix for CVE-2019-11477 and
CVE-2019-11478 (bsc#1140747).

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=1136446");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1137597");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1140747");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-11477/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-11478/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-3846/");
  # https://www.suse.com/support/update/announcement/2019/suse-su-20191948-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?93074a6b");
  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 Server for SAP 12-SP3:zypper in -t patch
SUSE-SLE-SAP-12-SP3-2019-1942=1 SUSE-SLE-SAP-12-SP3-2019-1943=1
SUSE-SLE-SAP-12-SP3-2019-1944=1 SUSE-SLE-SAP-12-SP3-2019-1945=1
SUSE-SLE-SAP-12-SP3-2019-1946=1 SUSE-SLE-SAP-12-SP3-2019-1947=1
SUSE-SLE-SAP-12-SP3-2019-1948=1 SUSE-SLE-SAP-12-SP3-2019-1949=1
SUSE-SLE-SAP-12-SP3-2019-1950=1 SUSE-SLE-SAP-12-SP3-2019-1951=1
SUSE-SLE-SAP-12-SP3-2019-1952=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch
SUSE-SLE-SAP-12-SP2-2019-1928=1 SUSE-SLE-SAP-12-SP2-2019-1929=1
SUSE-SLE-SAP-12-SP2-2019-1931=1 SUSE-SLE-SAP-12-SP2-2019-1932=1
SUSE-SLE-SAP-12-SP2-2019-1933=1 SUSE-SLE-SAP-12-SP2-2019-1934=1

SUSE Linux Enterprise Server 12-SP3-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2019-1942=1 SUSE-SLE-SERVER-12-SP3-2019-1943=1
SUSE-SLE-SERVER-12-SP3-2019-1944=1 SUSE-SLE-SERVER-12-SP3-2019-1945=1
SUSE-SLE-SERVER-12-SP3-2019-1946=1 SUSE-SLE-SERVER-12-SP3-2019-1947=1
SUSE-SLE-SERVER-12-SP3-2019-1948=1 SUSE-SLE-SERVER-12-SP3-2019-1949=1
SUSE-SLE-SERVER-12-SP3-2019-1950=1 SUSE-SLE-SERVER-12-SP3-2019-1951=1
SUSE-SLE-SERVER-12-SP3-2019-1952=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2019-1928=1 SUSE-SLE-SERVER-12-SP2-2019-1929=1
SUSE-SLE-SERVER-12-SP2-2019-1931=1 SUSE-SLE-SERVER-12-SP2-2019-1932=1
SUSE-SLE-SERVER-12-SP2-2019-1933=1 SUSE-SLE-SERVER-12-SP2-2019-1934=1

SUSE Linux Enterprise Live Patching 12-SP4:zypper in -t patch
SUSE-SLE-Live-Patching-12-SP4-2019-1936=1
SUSE-SLE-Live-Patching-12-SP4-2019-1937=1
SUSE-SLE-Live-Patching-12-SP4-2019-1938=1
SUSE-SLE-Live-Patching-12-SP4-2019-1939=1
SUSE-SLE-Live-Patching-12-SP4-2019-1940=1");
  script_set_cvss_base_vector("CVSS2#AV:A/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:A/AC:L/PR:N/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-2019-3846");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_101-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_104-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_109-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_92-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_95-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_98-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_140-94_42-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_140-94_42-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_143-94_47-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_143-94_47-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_155-94_50-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_155-94_50-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_57-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_57-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_61-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_61-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_64-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_64-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_178-94_91-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_178-94_91-default-debuginfo");
  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) 2019-2024 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);
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 == "SLES12" && (! preg(pattern:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_140-94_42-default-10-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_140-94_42-default-debuginfo-10-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_143-94_47-default-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_143-94_47-default-debuginfo-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_155-94_50-default-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_155-94_50-default-debuginfo-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_57-default-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_57-default-debuginfo-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_61-default-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_61-default-debuginfo-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_64-default-6-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_156-94_64-default-debuginfo-6-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_162-94_69-default-5-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_162-94_69-default-debuginfo-5-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_162-94_72-default-5-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_162-94_72-default-debuginfo-5-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_175-94_79-default-4-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_175-94_79-default-debuginfo-4-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_176-94_88-default-3-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_176-94_88-default-debuginfo-3-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_178-94_91-default-3-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kgraft-patch-4_4_178-94_91-default-debuginfo-3-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_101-default-4-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_104-default-4-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_109-default-4-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_92-default-8-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_95-default-7-2.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"kgraft-patch-4_4_121-92_98-default-6-2.1")) 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");
}
VendorProductVersionCPE
novellsuse_linuxkgraft-patch-4_4_156-94_64-default-debuginfop-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_64-default-debuginfo
novellsuse_linuxkgraft-patch-4_4_162-94_69-defaultp-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default
novellsuse_linuxkgraft-patch-4_4_162-94_69-default-debuginfop-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default-debuginfo
novellsuse_linuxkgraft-patch-4_4_162-94_72-defaultp-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default
novellsuse_linuxkgraft-patch-4_4_162-94_72-default-debuginfop-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default-debuginfo
novellsuse_linuxkgraft-patch-4_4_175-94_79-defaultp-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default
novellsuse_linuxkgraft-patch-4_4_175-94_79-default-debuginfop-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default-debuginfo
novellsuse_linuxkgraft-patch-4_4_176-94_88-defaultp-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default
novellsuse_linuxkgraft-patch-4_4_176-94_88-default-debuginfop-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default-debuginfo
novellsuse_linuxkgraft-patch-4_4_178-94_91-defaultp-cpe:/a:novell:suse_linux:kgraft-patch-4_4_178-94_91-default
Rows per page:
1-10 of 291

8.8 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.7 High

AI Score

Confidence

High

8.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:N/C:C/I:C/A:C

0.972 High

EPSS

Percentile

99.8%