#VU19962 Cross-site scripting in Sitecore

Vulnerability identifier: #VU19962

Vulnerability risk: Low

CVSSv4.0: 1.2 [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:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Sitecore
Web applications / CMS

Vendor: Sitecore

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error when processing the Attributes field. A remote attacker can trick the victim to follow a 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

Sitecore: 9.0.1

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External links
https://dev.sitecore.net/Downloads/Sitecore%20Experience%20Platform/92/Sitecore%20Experience%20Platform%2092%20Initial%20Release/Release%20Notes
https://outpost24.com/blog

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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.