CVE-2024-27305

NameCVE-2024-27305
Descriptionaiosmtpd is a reimplementation of the Python stdlib smtpd.py based on asyncio. 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 is also existed in other SMTP software like Postfix. With the right SMTP server constellation, an attacker can send spoofed e-mails to inbound/receiving aiosmtpd instances. This issue has been addressed in version 1.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1066820

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-aiosmtpd (PTS)buster1.2-3vulnerable
bullseye1.2.2-1vulnerable
bookworm1.4.3-1.1vulnerable
trixie, sid1.4.4.post2-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-aiosmtpdsource(unstable)(unfixed)1066820

Notes

https://github.com/aio-libs/aiosmtpd/security/advisories/GHSA-pr2m-px7j-xg65
https://github.com/aio-libs/aiosmtpd/commit/24b6c79c8921cf1800e27ca144f4f37023982bbb (1.4.5)

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