CVE-2023-5770

HTML injection in email body through email subject

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Proofpoint Enterprise Protection contains a vulnerability in the email delivery agent that allows an unauthenticated attacker to inject improperly encoded HTML into the email body of a message through the email subject. The vulnerability is caused by inappropriate encoding when rewriting the email before delivery.This issue affects Proofpoint Enterprise Protection: from 8.20.2 before patch 4809, from 8.20.0 before patch 4805, from 8.18.6 before patch 4804 and all other prior versions.

Proofpoint Enterprise Protection contiene una vulnerabilidad en el agente de entrega de correo electrónico que permite a un atacante no autenticado inyectar HTML codificado incorrectamente en el cuerpo de un mensaje de correo electrónico a través del asunto del correo electrónico. La vulnerabilidad se debe a una codificación inadecuada al reescribir el correo electrónico antes de la entrega. Este problema afecta a Proofpoint Enterprise Protection: desde 8.20.2 antes del parche 4809, desde 8.20.0 antes del parche 4805, desde 8.18.6 antes del parche 4804 y todas las demás versiones anteriores.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-10-25 CVE Reserved
2024-01-09 CVE Published
2024-08-02 CVE Updated
2025-01-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-838: Inappropriate Encoding for Output Context

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0009	2024-01-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Proofpoint Search vendor "Proofpoint"		Enterprise Protection Search vendor "Proofpoint" for product "Enterprise Protection"				8.18.6 Search vendor "Proofpoint" for product "Enterprise Protection" and version "8.18.6"		-		Affected
Proofpoint Search vendor "Proofpoint"		Enterprise Protection Search vendor "Proofpoint" for product "Enterprise Protection"				8.20.0 Search vendor "Proofpoint" for product "Enterprise Protection" and version "8.20.0"		-		Affected
Proofpoint Search vendor "Proofpoint"		Enterprise Protection Search vendor "Proofpoint" for product "Enterprise Protection"				8.20.2 Search vendor "Proofpoint" for product "Enterprise Protection" and version "8.20.2"		-		Affected