F5 Networks BIG-IP : BIG-IP AFM vulnerability (K20682450)

Medium Nessus Plugin ID 118639

Synopsis

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

Description

X509 certificate verification was not correctly implementedin the early access 'user id' feature in the BIG-IP Advanced Firewall Manager, and thus did not properly validate the remote server's identity on certain versions of BIG-IP. (CVE-2017-6142)

Impact

In affected BIG-IP AFM versions, the system is unable to properly validate the remote server's identity, which may lead to man-in-the-middle (MITM) attacks. This issue affects the Network Firewall policy enforcement. The issue depends on an experimental configuration that was only deployed with F5 technical assistance as a proof of concept.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K20682450.

See Also

https://support.f5.com/csp/#/article/K20682450

Plugin Details

Severity: Medium

ID: 118639

File Name: f5_bigip_SOL20682450.nasl

Version: 1.1

Type: local

Published: 2018/11/02

Modified: 2018/11/02

Dependencies: 76940

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5.8

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

CVSS v3.0

Base Score: 4.8

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

Vulnerability Information

CPE: cpe:/a:f5:big-ip_advanced_firewall_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

Patch Publication Date: 2018/01/18

Reference Information

CVE: CVE-2017-6142