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

medium Nessus Plugin ID 118639

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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://my.f5.com/manage/s/article/K20682450

Plugin Details

Severity: Medium

ID: 118639

File Name: f5_bigip_SOL20682450.nasl

Version: 1.6

Type: local

Published: 11/2/2018

Updated: 11/3/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2017-6142

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/18/2018

Vulnerability Publication Date: 1/19/2018

Reference Information

CVE: CVE-2017-6142