F5 Networks BIG-IP : NTP vulnerability (K17114)

This script is Copyright (C) 2018 Tenable Network Security, Inc.

Synopsis :

The remote device is missing a vendor-supplied security patch.

Description :

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows
remote authenticated users with knowledge of the configuration
password and access to a computer entrusted to perform remote
configuration to cause a denial of service (service crash) via a NULL
byte in a crafted configuration directive packet. (CVE-2015-5146)

An attacker can use a specially crafted package to cause ntpd to
become unresponsive when all of the following conditions are met :

The ntpd configuration has enabled remote configuration.

The attacker has knowledge of the configuration password.

The attacker has access to a computer entrusted to perform remote


For BIG-IP systems using a default network time protocol (NTP)
configuration, there is no impact. However, BIG-IP systems with an NTP
configuration that is customized in line with the requirements of the
advisory may be vulnerable.

See also :


Solution :

Upgrade to one of the non-vulnerable versions listed in the F5
Solution K17114.

Risk factor :

Low / CVSS Base Score : 3.5
CVSS Temporal Score : 2.9
Public Exploit Available : true

Family: F5 Networks Local Security Checks

Nessus Plugin ID: 105510 ()

Bugtraq ID: 75589

CVE ID: CVE-2015-5146

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