Cross-site scripting in F5 Networks products - CVE-2020-5948

Vulnerability identifier: #VU49058

CSH Severity: Medium

CVSS v4: 5.1 [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]

CVE-ID: CVE-2020-5948

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

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 within certain iControl REST endpoints. 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.

BIG-IP PEM
BIG-IP AFM
BIG-IP ASM
BIG-IP APM
BIG-IP LTM
BIG-IP FPS
BIG-IP Analytics
BIG-IP GTM
BIG-IP AAM
BIG-IP DNS
BIG-IP Link Controller
BIG-IP

Install updates from vendor's website.

BIG-IP PEM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP AFM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP AAM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP DNS - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP ASM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP APM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP LTM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP FPS - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP Analytics - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP GTM - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1
BIG-IP Link Controller - addressed in versions 13.1.3.5, 14.1.2.8, 15.1.1, 16.0.1

• https://support.f5.com/csp/article/K42696541

• XSS in F5 Networks BIG-IP