F5 Networks BIG-IP : NTP vulnerability (K17525)

critical Nessus Plugin ID 91314
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Synopsis

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

Description

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value. (CVE-2015-7853)

Impact

Running a custom refclock driver in ntpd could overflow a data buffer under certain conditions. Running a custom installed refclock driver is not a supported configuration in F5 products.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K17525.

See Also

https://support.f5.com/csp/article/K17525

Plugin Details

Severity: Critical

ID: 91314

File Name: f5_bigip_SOL17525.nasl

Version: 2.11

Type: local

Published: 5/25/2016

Updated: 3/9/2020

Dependencies: f5_bigip_detect.nbin

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: E:U/RL:O/RC:C

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:/a:f5:big-ip_wan_optimization_manager, cpe:/a:f5:big-ip_webaccelerator, 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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/2/2015

Vulnerability Publication Date: 8/7/2017

Reference Information

CVE: CVE-2015-7853