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F5 Networks BIG-IP : BIG-IP ASM Bot Defense open redirection vulnerability (K33440533)

medium Nessus Plugin ID 146405

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Synopsis

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

Description

When receiving a unauthenticated client request with a maliciously crafted URI, a BIG-IP Advanced WAF or ASM virtual server configured with a DoS profile with Proactive Bot Defense (versions prior to 14.1.0), or a Bot Defense profile (versions 14.1.0 and later), may subject clients and web servers to Open Redirection attacks.
(CVE-2021-22984)

Impact

When a virtual server that has Bot Defense enabled processes the type of request described in this security advisory, the Bot Defense feature incorrectly generates a HTTP 307 status code (Temporary Redirect). As a result, the client experiences an unexpected HTTP redirection, which can potentially be usedfor a phishing scam or stealing user credentials. In addition, the site in the client request URI unexpectedly receives the redirected request.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K33440533.

See Also

https://my.f5.com/manage/s/article/K33440533

Plugin Details

Severity: Medium

ID: 146405

File Name: f5_bigip_SOL33440533.nasl

Version: 1.4

Type: local

Published: 2/11/2021

Updated: 11/3/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.0

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-2021-22984

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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_application_security_manager, cpe:/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: 6/30/2020

Vulnerability Publication Date: 2/12/2021

Reference Information

CVE: CVE-2021-22984