RHEL 7 : kernel (RHSA-2017:1842) (Stack Clash)

high Nessus Plugin ID 102143
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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* An use-after-free flaw was found in the Linux kernel which enables a race condition in the L2TPv3 IP Encapsulation feature. A local user could use this flaw to escalate their privileges or crash the system.
(CVE-2016-10200, Important)

* A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges.
(CVE-2017-2647, Important)

* It was found that the NFSv4 server in the Linux kernel did not properly validate layout type when processing NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. A remote attacker could use this flaw to soft-lockup the system and thus cause denial of service.
(CVE-2017-8797, Important)

This update also fixes multiple Moderate and Low impact security issues :

* CVE-2015-8839, CVE-2015-8970, CVE-2016-9576, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9806, CVE-2016-10088, CVE-2016-10147, CVE-2017-2596, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7616, CVE-2017-7889, CVE-2017-8890, CVE-2017-9074, CVE-2017-8890, CVE-2017-9075, CVE-2017-8890, CVE-2017-9076, CVE-2017-8890, CVE-2017-9077, CVE-2017-9242, CVE-2014-7970, CVE-2014-7975, CVE-2016-6213, CVE-2016-9604, CVE-2016-9685

Documentation for these issues is available from the Release Notes document linked from the References section.

Red Hat would like to thank Igor Redko (Virtuozzo) and Andrey Ryabinin (Virtuozzo) for reporting CVE-2017-2647; Igor Redko (Virtuozzo) and Vasily Averin (Virtuozzo) for reporting CVE-2015-8970; Marco Grassi for reporting CVE-2016-8645; and Dmitry Vyukov (Google Inc.) for reporting CVE-2017-2596. The CVE-2016-7042 issue was discovered by Ondrej Kozina (Red Hat); the CVE-2016-7097 issue was discovered by Andreas Gruenbacher (Red Hat) and Jan Kara (SUSE); the CVE-2016-6213 and CVE-2016-9685 issues were discovered by Qian Cai (Red Hat); and the CVE-2016-9604 issue was discovered by David Howells (Red Hat).

Additional Changes :

For detailed information on other changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?3395ff0b

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/security/cve/cve-2014-7970

https://access.redhat.com/security/cve/cve-2014-7975

https://access.redhat.com/security/cve/cve-2015-8839

https://access.redhat.com/security/cve/cve-2015-8970

https://access.redhat.com/security/cve/cve-2016-6213

https://access.redhat.com/security/cve/cve-2016-7042

https://access.redhat.com/security/cve/cve-2016-7097

https://access.redhat.com/security/cve/cve-2016-8645

https://access.redhat.com/security/cve/cve-2016-9576

https://access.redhat.com/security/cve/cve-2016-9588

https://access.redhat.com/security/cve/cve-2016-9604

https://access.redhat.com/security/cve/cve-2016-9685

https://access.redhat.com/security/cve/cve-2016-9806

https://access.redhat.com/security/cve/cve-2016-10088

https://access.redhat.com/security/cve/cve-2016-10147

https://access.redhat.com/security/cve/cve-2016-10200

https://access.redhat.com/security/cve/cve-2016-10741

https://access.redhat.com/security/cve/cve-2017-2584

https://access.redhat.com/security/cve/cve-2017-2596

https://access.redhat.com/security/cve/cve-2017-2647

https://access.redhat.com/security/cve/cve-2017-2671

https://access.redhat.com/security/cve/cve-2017-5551

https://access.redhat.com/security/cve/cve-2017-5970

https://access.redhat.com/security/cve/cve-2017-6001

https://access.redhat.com/security/cve/cve-2017-6951

https://access.redhat.com/security/cve/cve-2017-7187

https://access.redhat.com/security/cve/cve-2017-7495

https://access.redhat.com/security/cve/cve-2017-7616

https://access.redhat.com/security/cve/cve-2017-7889

https://access.redhat.com/security/cve/cve-2017-8797

https://access.redhat.com/security/cve/cve-2017-8890

https://access.redhat.com/security/cve/cve-2017-9074

https://access.redhat.com/security/cve/cve-2017-9075

https://access.redhat.com/security/cve/cve-2017-9076

https://access.redhat.com/security/cve/cve-2017-9077

https://access.redhat.com/security/cve/cve-2017-9242

https://access.redhat.com/security/cve/cve-2017-1000379

Plugin Details

Severity: High

ID: 102143

File Name: redhat-RHSA-2017-1842.nasl

Version: 3.19

Type: local

Agent: unix

Published: 8/3/2017

Updated: 10/24/2019

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

Temporal Vector: E:POC/RL:OF/RC: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: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:perf-debuginfo, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.6, cpe:/o:redhat:enterprise_linux:7.7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/1/2017

Vulnerability Publication Date: 10/13/2014

Reference Information

CVE: CVE-2014-7970, CVE-2014-7975, CVE-2015-8839, CVE-2015-8970, CVE-2016-10088, CVE-2016-10147, CVE-2016-10200, CVE-2016-10741, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9588, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-1000379, CVE-2017-2584, CVE-2017-2596, CVE-2017-2647, CVE-2017-2671, CVE-2017-5551, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7495, CVE-2017-7616, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9076, CVE-2017-9077, CVE-2017-9242

RHSA: 2017:1842