AIX OpenSSH Advisory : openssh_advisory2.asc

Medium Nessus Plugin ID 73558

Synopsis

The remote AIX host is running a vulnerable version of OpenSSH.

Description

The version of OpenSSH running on the remote host is affected by a denial of service vulnerability. The default configuration of OpenSSH through 6.1 enforces a fixed time limit between establishing a TCP connection and completing a login, which makes it easier for remote attackers to cause a denial of service (connection-slot exhaustion) by periodically making many new TCP connections.

Solution

A fix is available, and it can be downloaded from the AIX website.

To extract the fixes from the tar file:
zcat OpenSSH_6.0.0.6102.tar.Z | tar xvf -

IMPORTANT: If possible, it is recommended that a mksysb backup of the system be created. Verify it is both bootable and readable before proceeding.

To preview the fix installation:
installp -apYd . OpenSSH_6.0.0.6102

To install the fix package:
installp -aXYd . OpenSSH_6.0.0.6102

See Also

http://aix.software.ibm.com/aix/efixes/security/openssh_advisory2.asc

https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp

Plugin Details

Severity: Medium

ID: 73558

File Name: aix_openssh_advisory2.nasl

Version: $Revision: 1.2 $

Type: local

Published: 2014/04/16

Modified: 2016/04/01

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5

Temporal Score: 4.3

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:ibm:aix

Required KB Items: Host/AIX/lslpp, Host/local_checks_enabled, Host/AIX/version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/04/08

Vulnerability Publication Date: 2013/02/06

Reference Information

CVE: CVE-2010-5107

BID: 58162

OSVDB: 90007