AIX 7.1 TL 3 : ntp (IV74261)

Medium Nessus Plugin ID 85604

Synopsis

The remote AIX host is missing a security patch.

Description

The remote AIX host has a version of Network Time Protocol (NTP) installed that is affected by a denial of service vulnerability due to a flaw in the symmetric-key feature in the receive() function in file ntp_proto.c when receiving certain invalid packets, which causes state-variable updates to be performed. A man-in-the-middle attacker can exploit this, by spoofing the source IP of a peer, to cause a synchronization loss.

Solution

Install the appropriate interim fix according to the vendor advisory.

See Also

http://aix.software.ibm.com/aix/efixes/security/ntp_advisory3.asc

Plugin Details

Severity: Medium

ID: 85604

File Name: aix_IV74261.nasl

Version: $Revision: 2.4 $

Type: local

Published: 2015/08/25

Modified: 2017/01/19

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.3

Temporal Score: 3.6

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

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

CVSSv3

Base Score: 6.8

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Vulnerability Information

CPE: cpe:/o:ibm:aix:7.1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/08/21

Vulnerability Publication Date: 2015/04/07

Reference Information

CVE: CVE-2015-1799

BID: 73950

OSVDB: 120350