AIX OpenSSH Vulnerability : openssh_advisory5.asc

medium Nessus Plugin ID 85930

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Synopsis

The remote AIX host has a vulnerable version of OpenSSH.

Description

The version of OpenSSH running on the remote host is affected by a security bypass vulnerability due to a failure to check the refusal deadline during the forwarding of untrusted X11 connections. A remote attacker can exploit this to bypass timeout checks and XSECURITY restrictions.

Solution

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

To extract the fixes from the tar file :

zcat OpenSSH_6.0.0.6110.tar.Z | tar xvf - (or) zcat OpenSSH_6.0.0.6201.tar.Z | tar xvf -

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

To preview the fix installation :

installp -apYd . OpenSSH_6.0.0.6110 (or) installp -apYd . OpenSSH_6.0.0.6201

To install the fix package:

installp -aXYd . OpenSSH_6.0.0.6110 (or) installp -aXYd . OpenSSH_6.0.0.6201

Plugin Details

Severity: Medium

ID: 85930

File Name: aix_openssh_advisory5.nasl

Version: 1.8

Type: local

Family: AIX Local Security Checks

Published: 9/14/2015

Updated: 4/21/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

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

Vulnerability Information

CPE: cpe:/o:ibm:aix:5.3, cpe:/o:ibm:aix:6.1, cpe:/o:ibm:aix:7.1

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/4/2015

Vulnerability Publication Date: 7/1/2015

Reference Information

CVE: CVE-2015-5352

BID: 75525

Detections

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