Vulnerability identifier: #VU56090

Vulnerability risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23038

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware

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 TMUI and iRuleLX components. A remote authenticated attacker can inject 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 update from vendor's website.

Vulnerable software versions

BIG-IP: 16.0.0 - 16.0.1.1.9.6, 15.0.0 - 15.0.1.4, 15.1.0 - 15.1.3, 14.1.0 - 14.1.4.0.120.11, 13.1.0 - 13.1.4, 12.1.0 - 12.1.6

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External links
http://support.f5.com/csp/article/K61643620

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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