Vulnerability identifier: #VU84727
Vulnerability risk: Medium
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-77
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Postfix
Server applications /
Mail servers
Vendor: Postfix.org
Description
The vulnerability allows a remote attacker to spoof email messages.
The vulnerability exists due to an error when handling line endings other than <CR><LF>. A remote attacker can spoof contents of email message and bypass SPF protection mechanism.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Postfix: 3.0.0 - 3.8.3
External links
http://www.postfix.org/smtp-smuggling.html
http://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
http://www.openwall.com/lists/oss-security/2023/12/24/1
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. However, proof of concept for this vulnerability is available.