Amazon Linux AMI : kernel (ALAS-2012-83)

high Nessus Plugin ID 69690
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VPR Score: 5.9

Synopsis

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

Description

It was found that the data_len parameter of the sock_alloc_send_pskb() function in the Linux kernel's networking implementation was not validated before use. A local user with access to a TUN/TAP virtual interface could use this flaw to crash the system or, potentially, escalate their privileges. Note that unprivileged users cannot access TUN/TAP devices until the root user grants them access. (CVE-2012-2136 , Important)

Solution

Run 'yum update kernel' to update your system. You will need to reboot your system in order for the new kernel to be running.

See Also

https://alas.aws.amazon.com/ALAS-2012-83.html

Plugin Details

Severity: High

ID: 69690

File Name: ala_ALAS-2012-83.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/4/2013

Updated: 4/18/2018

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS v2.0

Base Score: 7.2

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:*:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-debuginfo-common-x86_64:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-headers:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-tools-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-doc:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-debuginfo-common-i686:*:*:*:*:*:*:*

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

Patch Publication Date: 6/10/2012

Reference Information

CVE: CVE-2012-2136

RHSA: 2012:0690

ALAS: 2012-83