SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3787-1)

High Nessus Plugin ID 119033

Synopsis

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

Description

This update for the Linux Kernel 4.4.103-92_56 fixes several issues.

The following security issues were fixed :

CVE-2018-5391: Fixed a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may have caused a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098).

CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039).

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-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2694=1 SUSE-SLE-SAP-12-SP2-2018-2695=1 SUSE-SLE-SAP-12-SP2-2018-2696=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2694=1 SUSE-SLE-SERVER-12-SP2-2018-2695=1 SUSE-SLE-SERVER-12-SP2-2018-2696=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1103098

https://bugzilla.suse.com/show_bug.cgi?id=1112039

https://www.suse.com/security/cve/CVE-2018-18386/

https://www.suse.com/security/cve/CVE-2018-5391/

http://www.nessus.org/u?b61d89fe

Plugin Details

Severity: High

ID: 119033

File Name: suse_SU-2018-3787-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/11/19

Modified: 2018/11/19

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

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

CVSS v3.0

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_103-92_53-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_103-92_56-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_90-92_50-default, cpe:/o:novell:suse_linux:12

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

Patch Publication Date: 2018/11/16

Reference Information

CVE: CVE-2018-18386, CVE-2018-5391