Vulnerability identifier: #VU83897

Vulnerability risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-40053

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Serv-U FTP Server
Server applications / File servers (FTP/HTTP)

Vendor: SolarWinds

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data on the file share function feature. A remote authenticated user can inject and execute arbitrary HTML 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 updates from vendor's website.

Vulnerable software versions

Serv-U FTP Server: 15.1 - 15.4 HF2

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External links
http://www.solarwinds.com/trust-center/security-advisories/CVE-2023-40053
http://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-4-1_release_notes.htm

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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.