AIX 7.1 TL 3 : ntp (IV68430)

High Nessus Plugin ID 81275


The remote AIX host is missing a security patch.


The version of NTP installed on the remote AIX host is affected by the following vulnerabilities :

- A security weakness exists due to the config_auth() function improperly generating default keys when no authentication key is defined in the ntp.conf file.
Key size is limited to 31 bits and the insecure ntp_random() function is used, resulting in cryptographically-weak keys with insufficient entropy. A remote attacker can exploit this to defeat cryptographic protection mechanisms via a brute-force attack.

- A security weakness exists due the use of a weak seed to prepare a random number generator used to generate symmetric keys. This allows a remote attacker to defeat cryptographic protection mechanisms via a brute-force attack. (CVE-2014-9294)

- Multiple stack-based buffer overflow conditions exist due to improper validation of user-supplied input when handling packets in the crypto_recv(), ctl_putdata(), and configure() functions when using autokey authentication. A remote attacker can exploit this, via a specially crafted packet, to cause a denial of service condition or the execution of arbitrary code.


Install the appropriate interim fix according to the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 81275

File Name: aix_IV68430.nasl

Version: 1.8

Type: local

Published: 2015/02/11

Updated: 2018/09/17

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 9.4

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

Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C

Vulnerability Information

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

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: 2015/02/10

Vulnerability Publication Date: 2014/12/19

Reference Information

CVE: CVE-2014-9293, CVE-2014-9294, CVE-2014-9295

BID: 71757, 71761, 71762

CERT: 852879