What is CVE-2023-5771?

CVE-2023-5771 is a vulnerability that allows an unauthenticated attacker to execute HTML injection in Proofpoint Enterprise Protection AdminUI through email subject.

How does CVE-2023-5771 affect Proofpoint Enterprise Protection?

CVE-2023-5771 affects Proofpoint Enterprise Protection versions 8.18.6 and 8.20.0 by allowing an unauthenticated attacker to send a specially crafted email with HTML in the subject, triggering XSS when viewing quarantined messages.

What is the severity of CVE-2023-5771?

CVE-2023-5771 has a severity rating of 6.1 (medium).

How can I fix CVE-2023-5771?

To fix CVE-2023-5771, upgrade Proofpoint Enterprise Protection to a version after 8.20.0.

Where can I find more information about CVE-2023-5771?

More information about CVE-2023-5771 can be found at the following reference link: [Proofpoint Security Advisory](https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010).

Vulnerability/
CVE-2023-5771

medium

6.1

CWE

EPSS

0.052%

6/11/2023

4/9/2024

CVE-2023-5771: HTML injection in AdminUI through email subject

First published: Mon Nov 06 2023(Updated: )

Proofpoint Enterprise Protection contains a stored XSS vulnerability in the AdminUI. An unauthenticated attacker can send a specially crafted email with HTML in the subject which triggers XSS when viewing quarantined messages. This issue affects Proofpoint Enterprise Protection: from 8.20.0 before patch 4796, from 8.18.6 before patch 4795 and all other prior versions.

Credit: security@proofpoint.com

Affected Software	Affected Version	How to fix
Proofpoint Enterprise Protection	<8.18.6
Proofpoint Enterprise Protection	=8.18.6
Proofpoint Enterprise Protection	=8.20.0

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Reference Links

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

Frequently Asked Questions

What is CVE-2023-5771?
CVE-2023-5771 is a vulnerability that allows an unauthenticated attacker to execute HTML injection in Proofpoint Enterprise Protection AdminUI through email subject.
How does CVE-2023-5771 affect Proofpoint Enterprise Protection?
CVE-2023-5771 affects Proofpoint Enterprise Protection versions 8.18.6 and 8.20.0 by allowing an unauthenticated attacker to send a specially crafted email with HTML in the subject, triggering XSS when viewing quarantined messages.
What is the severity of CVE-2023-5771?
CVE-2023-5771 has a severity rating of 6.1 (medium).
How can I fix CVE-2023-5771?
To fix CVE-2023-5771, upgrade Proofpoint Enterprise Protection to a version after 8.20.0.
Where can I find more information about CVE-2023-5771?
More information about CVE-2023-5771 can be found at the following reference link: [Proofpoint Security Advisory](https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010).

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version/proofpoint enterprise protection/8.20.0

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