Cross-site scripting in OpenWrt - CVE-2019-18993

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU35010

Cross-site scripting in OpenWrt - CVE-2019-18993

Published: December 3, 2019 / Updated: January 19, 2021


Vulnerability identifier: #VU35010
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-18993
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: openwrt.org
Affected software:
OpenWrt

Detailed vulnerability description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks via the "New port forward" Name field to the cgi-bin/luci/admin/network/firewall/forwards URI (this can occur, for example, on a TP-Link Archer C7 device).

The vulnerability exists due to insufficient sanitization of user-supplied data. 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.


How to mitigate CVE-2019-18993

Install update from vendor's website.

Sources