#VU50608 Cross-site scripting in F5 Networks products - CVE-2021-22979

Vulnerability identifier: #VU50608

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22979

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware
BIG-IP DDHD
Hardware solutions / Firmware
BIG-IP SSLO
Hardware solutions / Firmware
BIG-IP LTM
Hardware solutions / Security hardware applicances
BIG-IP AFM
Hardware solutions / Security hardware applicances
BIG-IP Analytics
Hardware solutions / Security hardware applicances
BIG-IP APM
Hardware solutions / Security hardware applicances
BIG-IP ASM
Hardware solutions / Security hardware applicances
BIG-IP FPS
Hardware solutions / Security hardware applicances
BIG-IP GTM
Hardware solutions / Security hardware applicances
BIG-IP PEM
Hardware solutions / Security hardware applicances
BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Advanced WAF
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: F5 Networks

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in an undisclosed page of the BIG-IP Configuration utility when Fraud Protection Service is provisioned. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 12.1.0 HF1 - 12.1.5.2, 13.1.0 - 13.1.3.4, 14.1.0 - 14.1.2.7, 15.0.0 - 15.0.1.4, 15.1.0 - 15.1.0.5, 16.0.0

BIG-IP LTM: 12.1.0 HF1 - 16.0.0

BIG-IP AAM: 12.1.0 HF1 - 16.0.0

BIG-IP Advanced WAF: 12.1.0 - 16.0.0

BIG-IP AFM: 12.1.0 HF1 - 16.0.0

BIG-IP Analytics: 12.1.0 - 16.0.0

BIG-IP APM: 12.1.0 HF1 - 16.0.0

BIG-IP ASM: 12.1.0 HF1 - 16.0.0

BIG-IP DDHD: 12.1.0 - 16.0.1

BIG-IP SSLO: 6.35.4

BIG-IP DNS: 12.1.0 - 16.0.0

BIG-IP FPS: 12.1.0 - 16.0.0

BIG-IP GTM: 12.1.0 - 16.0.0

BIG-IP Link Controller: 12.1.0 HF1 - 16.0.0

BIG-IP PEM: 12.1.0 HF1 - 16.0.0

BIG-IP SSLO: 12.1.0 - 16.0.1

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External links
https://support.f5.com/csp/article/K63497634

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.