Is CVE-2024-27305 in the CISA KEV catalog?

No. CVE-2024-27305 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-27305?

CVE-2024-27305 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2024-27305?

CVE-2024-27305 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-27305?

Upgrade python-aiosmtpd on debian 11 to 1.2.2-1+deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2024-27305

MEDIUM

5.3

CVSS v3

NVD

Description

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.

CWE-345

How to fix

Remediation Available

python-aiosmtpdDebian

Fixed in:1.2.2-1+deb11u1CVE-2024-27305

Fixed in:1.4.3-1.1+deb12u1CVE-2024-27305

Fixed in:1.4.6-1CVE-2024-27305

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Product1

postfix.org

Related Vulnerabilities

Other CWE-345 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-38831	High	7.8	98%	KEV + Ransom	Fix
CVE-2016-4553	High	8.6	80%	-	Fix
CVE-2016-4554	High	8.6	39%	-	Fix
CVE-2023-35719	Medium	6.8	26%	-	-
CVE-2022-26871	Critical	9.8	20%	KEV	-
CVE-2014-4936	High	9.3	17%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-22.