✕
Request a Demo
Rewterz
Rewterz Threat Advisory – CVE-2018-17182 – Linux kernel “vmacache_flush_all()” Use-After-Free Vulnerability
September 28, 2018
Rewterz
Rewterz Threat Advisory – Adobe Acrobat Reader DC Remote Code Execution Vulnerability
October 3, 2018

Rewterz Threat Advisory – CVE-2017-13695, CVE-2018-5873, CVE-2018-16658 – Oracle VM Server for x86 update for kernel-uek

Oracle has issued an update for kernel-uek included in Oracle VM Server for x86, fixing privilege escalation and information disclosure vulnerabilities.

 

 

IMPACT:  NORMAL

 

 

PUBLISH DATE:  01-10-2018

 

 

OVERVIEW

 

 

Oracle VM Server 3.x was detected to have multiple vulnerabilities which may lead to information disclosure or privilege escalation when exploited by malicious local users. Oracle has issued an update that patches the mentioned vulnerabilities.

 

 

ANALYSIS

 

 

Below is a brief summary of the vulnerabilities addressed in this update.

 

 

CVE-2017-13695

The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does not flush the operand cache which leads to a kernel stack dump. It allows the local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table (which is installed in the kernel through 4.9).

 

 

CVE-2018-5873

An issue was discovered in the __ns_get_path function in fs/nsfs.c in the Linux kernel before 4.11. A Use After Free condition may occur due to a race condition when accessing files. All Android releases from CAF using the Linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) will be affected, before security patch level 2018-07-05.

 

 

CVE-2018-16658

Linux kernel before 4.18.6 may allow for an information leakage in cdrom_ioctl_drive_status in drivers/cdrom/cdrom.c. The vulnerability could allow local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This vulnerability resembles CVE-2018-10940.

 

 

AFFECTED PRODUCTS

 

 

Oracle VM Server 3.x 

 

 

UPDATES

 

 

Apply updated packages or use unaffected versions of the Linux Kernel mentioned above.

Follow the link for help.

https://www.oracle.com/technetwork/es/server-storage/vm/downloads/index.html