RHEL 6 : MRG (RHSA-2018:1170)

Critical Nessus Plugin ID 109335

Synopsis

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

Description

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es) :

* kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important)

* kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important)

* kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate)

* kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate)

* kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate)

* kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/ netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate)

* kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Mohamed Ghannam for reporting CVE-2017-8824 and Armis Labs for reporting CVE-2017-1000410.

Bug Fix(es) :

* The kernel-rt packages have been upgraded to version 3.10.0-693.25.2.rt56.612, which provides a number of security and bug fixes over the previous version. (BZ#1549731)

* Intel Core X-Series (Skylake) processors use a hard-coded Time Stamp Counter (TSC) frequency of 25 MHz. In some cases this can be imprecise and lead to timing-related problems such as time drift, timers being triggered early, or TSC clock instability. This update mitigates these problems by no longer using the 'native_calibrate_tsc()' function to define the TSC frequency. Refined calibration is now used to update the clock rate accordingly in these cases. (BZ#1547854)

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2018:1170

https://access.redhat.com/security/cve/cve-2017-8824

https://access.redhat.com/security/cve/cve-2017-9725

https://access.redhat.com/security/cve/cve-2017-13166

https://access.redhat.com/security/cve/cve-2017-15265

https://access.redhat.com/security/cve/cve-2017-17449

https://access.redhat.com/security/cve/cve-2017-18017

https://access.redhat.com/security/cve/cve-2017-1000410

Plugin Details

Severity: Critical

ID: 109335

File Name: redhat-RHSA-2018-1170.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2018/04/25

Updated: 2019/04/05

Dependencies: 122878, 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debuginfo-common-x86_64, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-firmware, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla, p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-rt-vanilla-devel, cpe:/o:redhat:enterprise_linux:6

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: 2018/04/17

Vulnerability Publication Date: 2017/09/21

Reference Information

CVE: CVE-2017-1000410, CVE-2017-13166, CVE-2017-15265, CVE-2017-17449, CVE-2017-18017, CVE-2017-8824, CVE-2017-9725

RHSA: 2018:1170