Amazon Linux AMI : kernel (ALAS-2018-1046)

Medium Nessus Plugin ID 111337

Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

The fs/ext4/inline.c:ext4_read_inline_data() function in the Linux kernel performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode. The unbound copy can cause memory corruption or possible privilege escalation.
(CVE-2018-11412)

Solution

Run 'yum update kernel' and reboot the instance to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2018-1046.html

Plugin Details

Severity: Medium

ID: 111337

File Name: ala_ALAS-2018-1046.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/07/26

Modified: 2018/07/26

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.3

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-i686, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:perf-debuginfo, cpe:/o:amazon:linux

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

Patch Publication Date: 2018/07/23

Reference Information

CVE: CVE-2018-11412

ALAS: 2018-1046