Amazon Linux AMI : kernel Multiple Vulnerabilities (ALAS-2012-100)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS)
protocol implementation. A local, unprivileged user could use this
flaw to cause a denial of service. (CVE-2012-2372)

A malicious Network File System version 4 (NFSv4) server could return
a crafted reply to a GETACL request, causing a denial of service on
the client. (CVE-2011-4131)

The epoll implementation in the Linux kernel 2.6.37.2 and earlier does
not properly traverse a tree of epoll file descriptors, which allows
local users to cause a denial of service (CPU consumption) via a
crafted application that makes epoll_create and epoll_ctl system
calls. (CVE-2011-1083)

See also :

http://www.nessus.org/u?774eb011

Solution :

Run 'yum update kernel' to update your system. You must reboot your
instance for the new kernel to be loaded.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)

Family: Amazon Linux Local Security Checks

Nessus Plugin ID: 69590 ()

Bugtraq ID:

CVE ID: CVE-2011-1083
CVE-2011-4131
CVE-2012-2372