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EulerOS 2.0 SP2 : kernel (EulerOS-SA-2018-1296)

high Nessus Plugin ID 117740

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 - A an integer overflow vulnerability was discovered in the Linux kernel, from version 3.4 through 4.15, in the drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() function. An attacker with access to the udldrmfb driver could exploit this to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.(CVE-2018-8781)

 - ALSA sequencer core initializes the event pool on demand by invoking snd_seq_pool_init() when the first write happens and the pool is empty. A user can reset the pool size manually via ioctl concurrently, and this may lead to UAF or out-of-bound access.(CVE-2018-7566)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected kernel packages.

See Also

http://www.nessus.org/u?b1c0b0c7

Plugin Details

Severity: High

ID: 117740

File Name: EulerOS_SA-2018-1296.nasl

Version: 1.7

Type: local

Published: 9/27/2018

Updated: 3/10/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2018-8781

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:kernel-headers, p-cpe:/a:huawei:euleros:kernel-debuginfo, p-cpe:/a:huawei:euleros:kernel-tools-libs, p-cpe:/a:huawei:euleros:python-perf, p-cpe:/a:huawei:euleros:kernel-tools, p-cpe:/a:huawei:euleros:kernel-devel, p-cpe:/a:huawei:euleros:kernel, p-cpe:/a:huawei:euleros:kernel-debug-devel, p-cpe:/a:huawei:euleros:perf, p-cpe:/a:huawei:euleros:kernel-debug, cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:kernel-debuginfo-common-x86_64

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/14/2018

Reference Information

CVE: CVE-2018-7566, CVE-2018-8781