Reflected cross-site scripting in iCMS - CVE-2019-11426
Published: September 23, 2019 / Updated: April 27, 2020
Vulnerability identifier: #VU21268
CSH Severity: Low
CVSS v4.0: 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:P/U:Clear
CVE-ID: CVE-2019-11426
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: iCMS
Affected software:
iCMS
iCMS
Detailed vulnerability description
The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "admincp.php?app=config" tab parameter to the "app/admincp/template/admincp.header.php" file. 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.
PoC:
http://[host]/admincp.php?app=config&tab=cachezpl4%3C/script%3E%3Ciframe+src=data:text/html;base64,PHNjcmlwdD5hbGVydCgnYmFzZTY0X2lmcmFtZScpPC9zY3JpcHQ%2b%3E=1+laaaaHow to mitigate CVE-2019-11426
Install updates from vendor's website.