SMTP smuggling in Apache James

1) Command Injection

EUVDB-ID: #VU86899

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-51747

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform SMTP smuggling attack.

The vulnerability exists due to improper input validation when handling email headers. A remote attacker can forge an SMTP envelop, allowing for instance to bypass SPF checks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache James: 3.7.0 - 3.8.0

External links

http://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
http://postfix.org/smtp-smuggling.html
http://lists.apache.org/thread/rxkwbkh9vgbl9rzx1fkllyk3krhgydko
http://www.openwall.com/lists/oss-security/2024/02/27/4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.