F5 Networks BIG-IP : BIG-IP mcpd vulnerability (K32121038)

high Nessus Plugin ID 136135

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Synopsis

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

Description

A race condition exists where mcpd and other processes may make unencrypted connection attempts to a new configuration sync peer. The race condition can occur when changing the ConfigSync IP address of a peer, adding a new peer, or when the Traffic Management Microkernel (TMM) first starts up. (CVE-2020-5876)

Impact

The race condition gives a small window of opportunity for an attacker to takeover the connection and spoof a trusted peer device to extract and/or modify sensitive information on the system. This vulnerability is only present when the BIG-IP system is configured as part of a ConfigSync high availability (HA) device group.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K32121038.

Plugin Details

Severity: High

ID: 136135

File Name: f5_bigip_SOL32121038.nasl

Version: 1.5

Type: local

Family: F5 Networks Local Security Checks

Published: 4/30/2020

Updated: 11/3/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2020-5876

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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_domain_name_system, 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

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: 4/29/2020

Vulnerability Publication Date: 4/30/2020

Reference Information

CVE: CVE-2020-5876

Detections

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