Vulnerability identifier: #VU35940

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-13983

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ImpressCMS
Web applications / CMS

Vendor: The ImpressCMS Project

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 when processing the PATH_INFO to htdocs/install/index.php, htdocs/install/page_langselect.php, or htdocs/install/page_modcheck.php. 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ImpressCMS: 1.3.10

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External links
http://packetstormsecurity.com/files/150990/ImpressCMS-1.3.10-Cross-Site-Scripting.html
http://seclists.org/fulldisclosure/2019/Jan/8
http://www.netsparker.com/web-applications-advisories/ns-18-033-cross-site-scripting-in-impresscms/

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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.