CVE-2023-51766 (GCVE-0-2023-51766)
Vulnerability from cvelistv5
Published
2023-12-24 00:00
Modified
2024-08-02 22:48
Severity ?
CWE
  • n/a
Summary
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.
References
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/24/1 Mailing List, Third Party Advisory
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/25/1 Mailing List, Third Party Advisory
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/29/2 Mailing List, Mitigation, Third Party Advisory
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/01/01/1 Mailing List, Third Party Advisory
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/01/01/2 Mailing List, Third Party Advisory
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/01/01/3 Mailing List, Third Party Advisory
cve@mitre.org https://bugs.exim.org/show_bug.cgi?id=3063 Issue Tracking, Vendor Advisory
cve@mitre.org https://bugzilla.redhat.com/show_bug.cgi?id=2255852 Issue Tracking, Third Party Advisory
cve@mitre.org https://exim.org/static/doc/security/CVE-2023-51766.txt Broken Link
cve@mitre.org https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html Technical Description
cve@mitre.org https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca Patch
cve@mitre.org https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5 Patch
cve@mitre.org https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766 Mitigation, Vendor Advisory
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html Mailing List, Third Party Advisory
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/ Mailing List, Third Party Advisory
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/ Mailing List, Third Party Advisory
cve@mitre.org https://lwn.net/Articles/956533/ Third Party Advisory
cve@mitre.org https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/ Technical Description, Third Party Advisory
cve@mitre.org https://www.openwall.com/lists/oss-security/2023/12/23/2 Issue Tracking, Mailing List, Third Party Advisory
cve@mitre.org https://www.youtube.com/watch?v=V8KPV96g1To Exploit
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/12/24/1 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/12/25/1 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2023/12/29/2 Mailing List, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2024/01/01/1 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2024/01/01/2 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2024/01/01/3 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugs.exim.org/show_bug.cgi?id=3063 Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=2255852 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://exim.org/static/doc/security/CVE-2023-51766.txt Broken Link
af854a3a-2127-422b-91ae-364da2661108 https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html Technical Description
af854a3a-2127-422b-91ae-364da2661108 https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5 Patch
af854a3a-2127-422b-91ae-364da2661108 https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766 Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/ Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/ Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lwn.net/Articles/956533/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/ Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.openwall.com/lists/oss-security/2023/12/23/2 Issue Tracking, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.youtube.com/watch?v=V8KPV96g1To Exploit
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website


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Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lwn.net/Articles/956533/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Technical Description\",\"Third Party Advisory\"]},{\"url\":\"https://www.openwall.com/lists/oss-security/2023/12/23/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://www.youtube.com/watch?v=V8KPV96g1To\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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