SMTP smuggling in aiosmtpd



Published: 2024-03-15
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-27305
CWE-ID CWE-77
Exploitation vector Network
Public exploit N/A
Vulnerable software
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aiosmtpd
Universal components / Libraries / Libraries used by multiple products

Vendor

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Command Injection

EUVDB-ID: #VU87572

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-2024-27305

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 insufficient filtration of user supplied input when parsing headers in email messages. A remote attacker can send a specially crafted email message and smuggle or spoof e-mails with fake sender addresses, allowing advanced phishing attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

aiosmtpd: before 1.4.5

External links

http://github.com/aio-libs/aiosmtpd/security/advisories/GHSA-pr2m-px7j-xg65
http://github.com/aio-libs/aiosmtpd/commit/24b6c79c8921cf1800e27ca144f4f37023982bbb


Q & A

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.



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