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

high Nessus Plugin ID 126983

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

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.

Solution

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

Plugin Details

Severity: High

ID: 126983

File Name: suse_SU-2019-1948-1.nasl

Version: 1.5

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/24/2019

Updated: 12/6/2022

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_101-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_104-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_109-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_92-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_95-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_98-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_140-94_42-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_140-94_42-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_143-94_47-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_143-94_47-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_155-94_50-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_155-94_50-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_57-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_57-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_61-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_61-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_64-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_156-94_64-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_69-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_162-94_72-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_175-94_79-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_176-94_88-default-debuginfo, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_178-94_91-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_178-94_91-default-debuginfo, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/23/2019

Vulnerability Publication Date: 6/3/2019

Reference Information

CVE: CVE-2019-11477, CVE-2019-11478, CVE-2019-3846

Detections

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