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SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:3226-1) (Dirty COW)

high Nessus Plugin ID 105073

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Synopsis

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

Description

The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

 - CVE-2017-1000405: A bug in the THP CoW support could be used by local attackers to corrupt memory of other processes and cause them to crash (bnc#1069496).

 - CVE-2017-16939: The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages (bnc#1069702).

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.

Solution

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Workstation Extension 12-SP2:zypper in -t patch SUSE-SLE-WE-12-SP2-2017-2007=1

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-2007=1

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t patch SUSE-SLE-RPI-12-SP2-2017-2007=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-2007=1

SUSE Linux Enterprise Live Patching 12:zypper in -t patch SUSE-SLE-Live-Patching-12-2017-2007=1

SUSE Linux Enterprise High Availability 12-SP2:zypper in -t patch SUSE-SLE-HA-12-SP2-2017-2007=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-2007=1

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2017-2007=1

To bring your system up-to-date, use 'zypper patch'.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1069496

https://bugzilla.suse.com/show_bug.cgi?id=1069702

https://bugzilla.suse.com/show_bug.cgi?id=1070805

https://www.suse.com/security/cve/CVE-2017-1000405/

https://www.suse.com/security/cve/CVE-2017-16939/

http://www.nessus.org/u?2dddb1e4

Plugin Details

Severity: High

ID: 105073

File Name: suse_SU-2017-3226-1.nasl

Version: 3.9

Type: local

Agent: unix

Published: 12/7/2017

Updated: 1/6/2021

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

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:kernel-default-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-debugsource, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-extra, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-default-extra-debuginfo

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/6/2017

Vulnerability Publication Date: 11/24/2017

Reference Information

CVE: CVE-2017-1000405, CVE-2017-16939