EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1154)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


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 :

- An issue was discovered in the size of the stack guard
page on Linux, specifically a 4k stack guard page is
not sufficiently large and can be 'jumped' over (the
stack guard page is bypassed), this affects Linux
Kernel versions 4.11.5 and earlier (the stackguard page
was introduced in 2010).(CVE-2017-1000364)

- The make_response function in
drivers/block/xen-blkback/blkback.c in the Linux kernel
before 4.11.8 allows guest OS users to obtain sensitive
information from host OS (or other guest OS) kernel
memory by leveraging the copying of uninitialized
padding fields in Xen block-interface response
structures, aka XSA-216.(CVE-2017-10911)

- Multiple race conditions in the ext4 filesystem
implementation in the Linux kernel before 4.5 allow
local users to cause a denial of service (disk
corruption) by writing to a page that is associated
with a different user's file after unsynchronized hole
punching and page-fault handling.(CVE-2015-8839)

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.

See also :

http://www.nessus.org/u?9e2e0fc9

Solution :

Update the affected kernel packages.

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.1
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Huawei Local Security Checks

Nessus Plugin ID: 102241 ()

Bugtraq ID:

CVE ID: CVE-2015-8839
CVE-2017-1000364
CVE-2017-10911

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