CVE-2024-27305
aiosmtpd vulnerable to SMTP smuggling
Impact
### Summary aiosmtpd is vulnerable to inbound SMTP smuggling. SMTP smuggling is a novel vulnerability based on not so novel interpretation differences of the SMTP protocol. By exploiting SMTP smuggling, an attacker may send smuggle/spoof e-mails with fake sender addresses, allowing advanced phishing attacks. This issue also existed in other SMTP software like Postfix (https://www.postfix.org/smtp-smuggling.html). ### Details Detailed information on SMTP smuggling can be found in the full blog post (https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/) or on the Postfix homepage (https://www.postfix.org/smtp-smuggling.html). (and soon on the official website https://smtpsmuggling.com/) ### Impact With the right SMTP server constellation, an attacker can send spoofed e-mails to inbound/receiving aiosmtpd instances.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | aiosmtpd | < 1.4.5 | 1.4.5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Aio-Libs | Aiosmtpd | before 1.4.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/aio-libs/aiosmtpd/commit/24b6c79c8921cf1800e27ca144f4f37023982bbb
- https://github.com/aio-libs/aiosmtpd/security/advisories/GHSA-pr2m-px7j-xg65
- https://www.postfix.org/smtp-smuggling.html
- https://github.com/advisories/GHSA-pr2m-px7j-xg65
- https://nvd.nist.gov/vuln/detail/CVE-2024-27305
- https://github.com/pypa/advisory-database/tree/main/vulns/aiosmtpd/PYSEC-2024-221.yaml