AIX 7.1 TL 3 : ntp (IV74261)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


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.

See also :

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

Solution :

Install the appropriate interim fix according to the vendor advisory.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:A/AC:M/Au:N/C:N/I:P/A:P)
CVSS Temporal Score : 3.6
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: AIX Local Security Checks

Nessus Plugin ID: 85604 ()

Bugtraq ID: 73950

CVE ID: CVE-2015-1799

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