CVE-2023-5770

HTML injection in email body through email subject

Description

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.22%
Vendor Advisory proofpoint.com
Affected: Proofpoint Proofpoint Enterprise Protection
Published at:
Updated at:

References

Link Tags
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0009 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5770?
CVE-2023-5770 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5770?
To fix CVE-2023-5770, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-5770 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5770 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5770?
CVE-2023-5770 affects Proofpoint Proofpoint Enterprise Protection.
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