F5 Networks BIG-IP : NTP vulnerabilities (K02360853)

high Nessus Plugin ID 97443

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Synopsis

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

Description

CVE-2015-5194

The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to cause a denial of service (ntpd crash) via crafted logconfig commands.

CVE-2015-5195 ntp_openssl.m4 in ntpd in NTP before 4.2.7p112 allows remote attackers to cause a denial of service (segmentation fault) via a crafted statistics or filegen configuration command that is not enabled during compilation.

Impact

The ntpd process could stop responding, due to an uninitialized variable, when processing malformed configuration commands.

F5 has evaluated this vulnerability as having low impact to the BIG-IP product line for the following reasons :

This issue is not exposed in a BIG-IP system default configuration.

The configuration that exposes the issue is not recommended by F5.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K02360853.

Plugin Details

Severity: High

ID: 97443

File Name: f5_bigip_SOL02360853.nasl

Version: 3.11

Type: local

Family: F5 Networks Local Security Checks

Published: 3/1/2017

Updated: 3/9/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/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: 1/21/2016

Vulnerability Publication Date: 7/21/2017

Reference Information

CVE: CVE-2015-5194, CVE-2015-5195

Detections

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