Vulnerability identifier: #VU15939

Vulnerability risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-17321

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SeaCMS
Web applications / CMS

Vendor: SeaCMS .Net

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists in "admin_datarelate.php" due to insufficient sanitization of user-supplied data passed via the time or maxHit parameter in a dorandomset action. A remote attacker can trick the victim to follow a specially 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.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

SeaCMS: 6.64

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External links
http://secwk.blogspot.com/2018/09/seacms-664-xss-vulnerability_14.html

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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.