Vulnerability   
Search   
    Search 324607 CVE descriptions
and 146377 test descriptions,
access 10,000+ cross references.
Tests   CVE   All  

Test ID:1.3.6.1.4.1.25623.1.0.114254
Category:SMTP problems
Title:Exim < 4.97.1 SMTP Smuggling Vulnerability (Dec 2023)
Summary:Exim is prone to a SMTP smuggling vulnerability.
Description:Summary:
Exim is prone to a SMTP smuggling vulnerability.

Vulnerability Insight:
Exim allows SMTP smuggling in certain PIPELINING/CHUNKING
configurations. Remote attackers can use a published exploitation technique to inject e-mail
messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This
occurs because Exim supports . but some other popular e-mail servers do not.

Affected Software/OS:
Exim versions prior to 4.97.1.

Solution:
Update to version 4.97.1 or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2023-51766
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
https://bugs.exim.org/show_bug.cgi?id=3063
https://bugzilla.redhat.com/show_bug.cgi?id=2255852
https://exim.org/static/doc/security/CVE-2023-51766.txt
https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
https://lwn.net/Articles/956533/
https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
https://www.openwall.com/lists/oss-security/2023/12/23/2
https://www.youtube.com/watch?v=V8KPV96g1To
https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
http://www.openwall.com/lists/oss-security/2023/12/24/1
http://www.openwall.com/lists/oss-security/2023/12/25/1
http://www.openwall.com/lists/oss-security/2023/12/29/2
http://www.openwall.com/lists/oss-security/2024/01/01/1
http://www.openwall.com/lists/oss-security/2024/01/01/2
http://www.openwall.com/lists/oss-security/2024/01/01/3
CopyrightCopyright (C) 2024 Greenbone AG

This is only one of 146377 vulnerability tests in our test suite. Find out more about running a complete security audit.

To run a free test of this vulnerability against your system, register below.




© 1998-2025 E-Soft Inc. All rights reserved.