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CVE-2024-27305

CVE-2024-27305 · SMTP smuggling in aiosmtpd

This page contains facts from public vulnerability sources. Check the original advisory before updating.

aiosmtpd 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.

CVSS 5.3 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • aiosmtpd

    Versions
    • < 1.4.5: Affected

    No fix published

  • python-aiosmtpd Debian:12

    Versions
    • 1.4.3-1.1
    Affected ranges
    • ECOSYSTEM: < 1.4.3-1.1+deb12u1

    Update to 1.4.3-1.1+deb12u1

  • python-aiosmtpd Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.4.6-1

    Update to 1.4.6-1

  • python-aiosmtpd Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.4.6-1

    Update to 1.4.6-1

  • aiosmtpd PyPI

    Versions
    • 1.0
    • 1.0a1
    • 1.0a2
    • 1.0a3
    • 1.0a4
    • 1.0a5
    • 1.0b1
    • 1.0rc1
    • 1.1
    • 1.2
    • 1.2.2
    • 1.2.4
    • 1.3.0
    • 1.3.1
    • 1.3.2
    • 1.4.0
    • 1.4.1
    • 1.4.2
    • 1.4.3
    • 1.4.3rc1
    • 1.4.3rc2
    • 1.4.4
    • 1.4.4.post1
    • 1.4.4.post2
    Affected ranges
    • ECOSYSTEM: < 1.4.5

    Update to 1.4.5

  • aiosmtpd PyPI

    Versions
    • 1.0
    • 1.0a1
    • 1.0a2
    • 1.0a3
    • 1.0a4
    • 1.0a5
    • 1.0b1
    • 1.0rc1
    • 1.1
    • 1.2
    • 1.2.2
    • 1.2.4
    • 1.3.0
    • 1.3.1
    • 1.3.2
    • 1.4.0
    • 1.4.1
    • 1.4.2
    • 1.4.3
    • 1.4.3rc1
    • 1.4.3rc2
    • 1.4.4
    • 1.4.4.post1
    • 1.4.4.post2
    • 1.3.0a3
    • 1.3.0a2
    • 1.2.3
    • 1.2.1
    • 1.2-rc
    Affected ranges
    • GIT: < 24b6c79c8921cf1800e27ca144f4f37023982bbb
    • ECOSYSTEM: < 1.4.5

    Update to 1.4.5

  • python-aiosmtpd Ubuntu:18.04:LTS

    Versions
    • 1.1-3
    • 1.1-4
    • 1.1-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:20.04:LTS

    Versions
    • 1.2-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:22.04:LTS

    Versions
    • 1.2.2-1
    • 1.4.2-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:24.04:LTS

    Versions
    • 1.4.3-1.1
    • 1.4.4.post2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:25.10

    Versions
    • 1.4.6-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:26.10

    Versions
    • 1.4.6-6
    • 1.4.6-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-aiosmtpd Ubuntu:26.04:LTS

    Versions
    • 1.4.6-5
    • 1.4.6-6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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