Cross-site scripting in SonicOS - CVE-2020-5142
Published: October 12, 2020 / Updated: October 16, 2020
Vulnerability identifier: #VU47691
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-2020-5142
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 the SSLVPN web interface. 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.
Affected software
SonicOS
How to mitigate CVE-2020-5142
Install updates from vendor's website.
SonicOS - addressed in versions 5.9.2.7-5n, 5.9.2.13-7n, 6.0.5.3-94o, 6.5.1.12-1n, 6.5.4.v-21s-987, 6.5.4.7-83n, 7 7.0.0.0-2