Amazon Linux AMI Update: kernel / openssh Denial of Service (ALAS-2014-319)

Medium Nessus Plugin ID 73569

Synopsis

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

Description

Due to a problem with the configuration of kernels 3.10.34-37 and 3.10.34-38 and their interaction with the authentication modules stack, the sshd daemon that is part of the openssh package will no longer allow remote logins following a restart of the sshd service.

Solution

Run 'yum update openssh kernel' to update the system. A reboot will be necessary for the new kernel on the instance.

See Also

http://www.nessus.org/u?70e74915

Plugin Details

Severity: Medium

ID: 73569

File Name: ala_ALAS-2014-319.nasl

Version: Revision

Type: local

Agent: unix

Published: 2014/04/16

Updated: 2014/04/16

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:openssh, p-cpe:/a:amazon:linux:openssh-clients, p-cpe:/a:amazon:linux:openssh-debuginfo, p-cpe:/a:amazon:linux:openssh-ldap, p-cpe:/a:amazon:linux:openssh-keycat, p-cpe:/a:amazon:linux:openssh-server, p-cpe:/a:amazon:linux:pam_ssh_agent_auth, cpe:/o:amazon:linux

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

Patch Publication Date: 2014/03/29

Reference Information

ALAS: 2014-319