#VU82794 Stored cross-site scripting in Proofpoint Enterprise Protection - CVE-2023-5771

Vulnerability identifier: #VU82794

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2023-5771

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Proofpoint Enterprise Protection
Server applications / DLP, anti-spam, sniffers

Vendor: Proofpoint

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 passed via email subject to the AdminUI. A remote attacker can send a specially crafted email 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

Proofpoint Enterprise Protection: before 8.18.6

---

External links
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010

---

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.