In short
- CVE-2024-34083 is a MEDIUM (CVSS 5.4) vulnerability affecting aiosmtpd.
- Chance of exploitation in the next 30 days (EPSS): 0.23%, higher than 13.6% of all vulnerabilities.
- Fix: update to 1.4.6 or later.
| Package | Affected versions | Patched versions |
|---|
| aiosmtpd PyPI | < 1.4.6
| 1.4.6
|
Description
Summary
Servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a MitM attack.
References
NVD description
aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a man-in-the-middle attack. Version 1.4.6 contains a patch for the issue.
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