Detections
Analytics
RHEL 6 : kernel (RHSA-2018:1346)
high Nessus Plugin ID 109636
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Synopsis
The remote Red Hat host is missing one or more security updates for kernel.Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:1346 advisory.The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* hw: cpu: speculative execution permission faults handling (CVE-2017-5754, x86 32-bit)
* Kernel: error in exception handling leads to DoS (CVE-2018-8897)
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 Google Project Zero for reporting CVE-2017-5754 and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897.
Bug Fix(es):
* The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554253)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL kernel package based on the guidance in RHSA-2018:1346.See Also
https://access.redhat.com/security/vulnerabilities/pop_ss
https://bugzilla.redhat.com/show_bug.cgi?id=1519781
https://bugzilla.redhat.com/show_bug.cgi?id=1567074
http://www.nessus.org/u?892ef523
http://www.nessus.org/u?9cdeb030
https://access.redhat.com/errata/RHSA-2018:1346
https://access.redhat.com/security/cve/CVE-2017-5754
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 109636
File Name: redhat-RHSA-2018-1346.nasl
Version: 1.20
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/9/2018
Updated: 11/5/2024
Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.5
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-8897
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
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:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-firmware, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, cpe:/o:redhat:rhel_eus:6.7, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:perf
Required KB Items: Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu, Host/local_checks_enabled
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/10/2018
Vulnerability Publication Date: 1/4/2018
Exploitable With
Metasploit (Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability)