SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1924-1) (SACK Panic) (SACK Slowness)

high Nessus Plugin ID 126981

Language:

Synopsis

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

Description

This update for the Linux Kernel 3.12.74-60_64_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)

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-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-1923=1 SUSE-SLE-SAP-12-SP1-2019-1924=1 SUSE-SLE-SAP-12-SP1-2019-1925=1 SUSE-SLE-SAP-12-SP1-2019-1926=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-1923=1 SUSE-SLE-SERVER-12-SP1-2019-1924=1 SUSE-SLE-SERVER-12-SP1-2019-1925=1 SUSE-SLE-SERVER-12-SP1-2019-1926=1

Plugin Details

Severity: High

ID: 126981

File Name: suse_SU-2019-1924-1.nasl

Version: 1.5

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/24/2019

Updated: 5/8/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2019-11477

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2019-11478

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_110-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_107-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_104-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_99-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_99-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_110-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_104-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_107-default

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: 6/19/2019

Reference Information

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

Detections

Analytics