#VU14714 Cross-site scripting in GetSimple CMS - CVE-2018-9173

Vulnerability identifier: #VU14714

Vulnerability 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-2018-9173

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
GetSimple CMS
Web applications / CMS

Vendor: GetSimple CMS

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in admin/template/js/uploadify/uploadify.swf in GetSimple CMS 3.3.13. A remote non-authenticated attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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
Install update from vendor's website.

Vulnerable software versions

GetSimple CMS: 3.3.13

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External links
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1266
https://www.exploit-db.com/exploits/44408/

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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. However, proof of concept for this vulnerability is available.