F5 Networks BIG-IP : Web application firewall vulnerability (K44553214)

high Nessus Plugin ID 152814
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Synopsis

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

Description

The version of F5 Networks BIG-IP installed on the remote host is prior to 15.1.3.1 / 16.0.1.2 / 16.1.0. It is, therefore, affected by a vulnerability as referenced in the K44553214 advisory.

- On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the bd process to terminate. Note:
Software versions which have reached End of Technical Support (EoTS) are not evaluated. (CVE-2021-23050)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K44553214.

See Also

https://support.f5.com/csp/article/K44553214

Plugin Details

Severity: High

ID: 152814

File Name: f5_bigip_SOL44553214.nasl

Version: 1.6

Type: local

Published: 8/25/2021

Updated: 10/28/2021

Dependencies: f5_bigip_detect.nbin

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2021-23050

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

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:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*, cpe:2.3:h:f5:big-ip:*:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Settings/ParanoidReport, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/24/2021

Vulnerability Publication Date: 8/26/2021

Reference Information

CVE: CVE-2021-23050

IAVA: 2021-A-0394