{"id":"CVE-2023-51765","state":"PUBLISHED","title":"sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL F","description":"sendmail through 8.17.2 allows SMTP smuggling in certain 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 sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features.","publishedAt":"2023-12-24T00:00:00.000Z","updatedAt":"2024-08-02T22:48:11.197Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/","https://www.openwall.com/lists/oss-security/2023/12/22/7","https://www.openwall.com/lists/oss-security/2023/12/21/7","https://github.com/freebsd/freebsd-src/commit/5dd76dd0cc19450133aa379ce0ce4a68ae07fb39#diff-afdf514b32ac88004952c11660c57bc96c3d8b2234007c1cbd8d7ed7fd7935cc","http://www.openwall.com/lists/oss-security/2023/12/24/1","http://www.openwall.com/lists/oss-security/2023/12/25/1","https://bugzilla.suse.com/show_bug.cgi?id=1218351","https://bugzilla.redhat.com/show_bug.cgi?id=2255869","https://access.redhat.com/security/cve/CVE-2023-51765","https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html","http://www.openwall.com/lists/oss-security/2023/12/26/5","http://www.openwall.com/lists/oss-security/2023/12/29/5","http://www.openwall.com/lists/oss-security/2023/12/30/3","http://www.openwall.com/lists/oss-security/2023/12/30/1","https://www.youtube.com/watch?v=V8KPV96g1To","https://lwn.net/Articles/956533/","https://lists.debian.org/debian-lts-announce/2024/06/msg00004.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/51xxx/CVE-2023-51765.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-51765","state":"PUBLISHED","datePublished":"2023-12-24T00:00:00.000Z","dateUpdated":"2024-08-02T22:48:11.197Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2023-12-24T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"sendmail through 8.17.2 allows SMTP smuggling in certain 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 sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/"},{"url":"https://www.openwall.com/lists/oss-security/2023/12/22/7"},{"url":"https://www.openwall.com/lists/oss-security/2023/12/21/7"},{"url":"https://github.com/freebsd/freebsd-src/commit/5dd76dd0cc19450133aa379ce0ce4a68ae07fb39#diff-afdf514b32ac88004952c11660c57bc96c3d8b2234007c1cbd8d7ed7fd7935cc"},{"url":"http://www.openwall.com/lists/oss-security/2023/12/24/1","name":"[oss-security] 20231224 Re: Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/25/1","name":"[oss-security] 20231225 Re: Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1218351"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2255869"},{"url":"https://access.redhat.com/security/cve/CVE-2023-51765"},{"url":"https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html"},{"url":"http://www.openwall.com/lists/oss-security/2023/12/26/5","name":"[oss-security] 20231226 Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/29/5","name":"[oss-security] 20231229 Re: Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/30/3","name":"[oss-security] 20231230 Re: Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/30/1","name":"[oss-security] 20231230 Re: Re: New SMTP smuggling attack","tags":["mailing-list"]},{"url":"https://www.youtube.com/watch?v=V8KPV96g1To"},{"url":"https://lwn.net/Articles/956533/"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00004.html","name":"[debian-lts-announce] 20240615 [SECURITY] [DLA 3829-1] sendmail security update","tags":["mailing-list"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2024-06-15T09:05:58.617Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/","tags":["x_transferred"]},{"url":"https://www.openwall.com/lists/oss-security/2023/12/22/7","tags":["x_transferred"]},{"url":"https://www.openwall.com/lists/oss-security/2023/12/21/7","tags":["x_transferred"]},{"url":"https://github.com/freebsd/freebsd-src/commit/5dd76dd0cc19450133aa379ce0ce4a68ae07fb39#diff-afdf514b32ac88004952c11660c57bc96c3d8b2234007c1cbd8d7ed7fd7935cc","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/24/1","name":"[oss-security] 20231224 Re: Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/25/1","name":"[oss-security] 20231225 Re: Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1218351","tags":["x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2255869","tags":["x_transferred"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-51765","tags":["x_transferred"]},{"url":"https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/26/5","name":"[oss-security] 20231226 Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/29/5","name":"[oss-security] 20231229 Re: Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/30/3","name":"[oss-security] 20231230 Re: Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2023/12/30/1","name":"[oss-security] 20231230 Re: Re: New SMTP smuggling attack","tags":["mailing-list","x_transferred"]},{"url":"https://www.youtube.com/watch?v=V8KPV96g1To","tags":["x_transferred"]},{"url":"https://lwn.net/Articles/956533/","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00004.html","name":"[debian-lts-announce] 20240615 [SECURITY] [DLA 3829-1] sendmail security update","tags":["mailing-list","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T22:48:11.197Z"}}]}}}