#VU49276 Stored cross-site scripting in Subrion CMS - CVE-2020-35437

Vulnerability identifier: #VU49276

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-35437

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Subrion CMS
Web applications / CMS

Vendor: Intelliants

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 the avatar[path] parameter in a POST request to the /_core/profile/ URI. A remote user can inject 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

Subrion CMS: 4.2.1

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External links
https://github.com/intelliants/subrion/issues/880

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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.