https://seclists.org/oss-sec/2023/q4/352: Re: New SMTP smuggling attack
Published Dec 30, 2023
·Updated
Affected Software
3 affected components
Sendmail Sendmail
Exim Exim
Postfix Postfix
Frequently Asked Questions
1
What is the severity of CVE-2023-51765?
CVE-2023-51765 is classified as a high-severity vulnerability due to its potential to enable SMTP smuggling attacks, compromising email communication.
2
How do I fix CVE-2023-51765?
To fix CVE-2023-51765, it is recommended to update Sendmail, Exim, and Postfix to their latest patched versions that address this vulnerability.
3
What systems are affected by CVE-2023-51765?
CVE-2023-51765 affects multiple mail transfer agents including Sendmail, Exim, and Postfix.
4
What is SMTP smuggling in the context of CVE-2023-51765?
SMTP smuggling refers to the exploitation of vulnerabilities in email protocols that allow an attacker to bypass security mechanisms and send malicious emails.
5
Is CVE-2023-51765 actively being exploited?
As of now, there is no confirmed report of active exploitation in the wild for CVE-2023-51765, but the risk remains significant.