Vulnerability identifier: #VU21268
Vulnerability risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
iCMS
Web applications /
CMS
Vendor: iCMS
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+laaaa
Mitigation
Install updates from vendor's website.
Vulnerable software versions
iCMS: 7.0.0 - 7.0.15
External links
http://github.com/idreamsoft/iCMS/issues/64
http://github.com/idreamsoft/iCMS/commit/387b37ccf35afcb14d478d644011c8ecd101c3a4
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.