5.3

CVE-2023-51766

Exploit
Exim before 4.97.1 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 <LF>.<CR><LF> but some other popular e-mail servers do not.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Exim ≫ Exim Version < 4.97.1
Fedoraproject ≫ Fedora Version38
Fedoraproject ≫ Fedora Version39
Debian ≫ Debian Linux Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.07% 0.605
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-345 Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

http://www.openwall.com/lists/oss-security/2023/12/24/1
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2023/12/25/1
Third Party Advisory
Mailing List
https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
Technical Description
https://lwn.net/Articles/956533/
Third Party Advisory
https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
Third Party Advisory
Technical Description
https://www.youtube.com/watch?v=V8KPV96g1To
Exploit
http://www.openwall.com/lists/oss-security/2023/12/29/2
Third Party Advisory
Mailing List
Mitigation
http://www.openwall.com/lists/oss-security/2024/01/01/1
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2024/01/01/2
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2024/01/01/3
Third Party Advisory
Mailing List
https://bugs.exim.org/show_bug.cgi?id=3063
Vendor Advisory
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2255852
Third Party Advisory
Issue Tracking
https://exim.org/static/doc/security/CVE-2023-51766.txt
Broken Link
https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
Patch
https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
Patch
https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766
Vendor Advisory
Mitigation
https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
Third Party Advisory
Mailing List
https://www.openwall.com/lists/oss-security/2023/12/23/2
Third Party Advisory
Mailing List
Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/