F5 Networks BIG-IP : NTP vulnerability (K17566)

Medium Nessus Plugin ID 86774

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VPR Score: 4.4

Synopsis

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

Description

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted 'KOD' messages. (CVE-2015-7704)

Impact

An off-path attacker can send a crafted Kiss of Death (KoD) packet to the client, which will increase the client's polling interval to a large value and effectively disable synchronization with the server.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K17566.

See Also

https://support.f5.com/csp/article/K17566

Plugin Details

Severity: Medium

ID: 86774

File Name: f5_bigip_SOL17566.nasl

Version: 2.13

Type: local

Published: 2015/11/06

Updated: 2019/01/04

Dependencies: 76940

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS v2.0

Base Score: 5

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

CVSS v3.0

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/a:f5:big-ip_access_policy_manager, cpe:/a:f5:big-ip_advanced_firewall_manager, cpe:/a:f5:big-ip_application_acceleration_manager, cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_application_visibility_and_reporting, cpe:/a:f5:big-ip_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/h:f5:big-ip, cpe:/h:f5:big-ip_protocol_security_manager

Required KB Items: Host/local_checks_enabled, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version, Settings/ParanoidReport

Patch Publication Date: 2015/11/05

Reference Information

CVE: CVE-2015-7704