{ "dataType": "CVE_RECORD", "cveMetadata": { "state": "PUBLISHED", "cveId": "CVE-2023-51764", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-08-02T22:48:11.093Z", "dateReserved": "2023-12-24T00:00:00", "datePublished": "2023-12-24T00:00:00" }, "containers": { "cna": { "providerMetadata": { "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-06-10T18:07:59.991035" }, "descriptions": [ { "lang": "en", "value": "Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). 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 Postfix supports . but some other popular e-mail servers do not. To prevent attack variants (by always disallowing without ), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9." } ], "affected": [ { "vendor": "n/a", "product": "n/a", "versions": [ { "version": "n/a", "status": "affected" } ] } ], "references": [ { "url": "https://www.postfix.org/smtp-smuggling.html" }, { "url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/" }, { "name": "[oss-security] 20231224 Re: Re: New SMTP smuggling attack", "tags": [ "mailing-list" ], "url": "http://www.openwall.com/lists/oss-security/2023/12/24/1" }, { "name": "[oss-security] 20231225 Re: Re: New SMTP smuggling attack", "tags": [ "mailing-list" ], "url": "http://www.openwall.com/lists/oss-security/2023/12/25/1" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255563" }, { "url": "https://access.redhat.com/security/cve/CVE-2023-51764" }, { "url": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html" }, { "url": "https://github.com/eeenvik1/CVE-2023-51764" }, { "url": "https://github.com/duy-31/CVE-2023-51764" }, { "url": "https://www.youtube.com/watch?v=V8KPV96g1To" }, { "name": "FEDORA-2024-c839e7294f", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRLF5SOS7TP5N7FQSEK2NFNB44ISVTZC/" }, { "name": "FEDORA-2024-5c186175f2", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQ5WXFCW2N6G2PH3JXDTYW5PH5EBQEGO/" }, { "url": "https://lwn.net/Articles/956533/" }, { "url": "https://www.openwall.com/lists/oss-security/2024/01/22/1" }, { "url": "https://www.postfix.org/announcements/postfix-3.8.5.html" }, { "name": "[debian-lts-announce] 20240130 [SECURITY] [DLA 3725-1] postfix security update", "tags": [ "mailing-list" ], "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00020.html" }, { "name": "[oss-security] 20240508 Re: New SMTP smuggling attack", "tags": [ "mailing-list" ], "url": "http://www.openwall.com/lists/oss-security/2024/05/09/3" } ], "problemTypes": [ { "descriptions": [ { "type": "text", "lang": "en", "description": "n/a" } ] } ] }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T22:48:11.093Z" }, "title": "CVE Program Container", "references": [ { "url": "https://www.postfix.org/smtp-smuggling.html", "tags": [ "x_transferred" ] }, { "url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/", "tags": [ "x_transferred" ] }, { "name": "[oss-security] 20231224 Re: Re: New SMTP smuggling attack", "tags": [ "mailing-list", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2023/12/24/1" }, { "name": "[oss-security] 20231225 Re: Re: New SMTP smuggling attack", "tags": [ "mailing-list", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2023/12/25/1" }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255563", "tags": [ "x_transferred" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2023-51764", "tags": [ "x_transferred" ] }, { "url": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html", "tags": [ "x_transferred" ] }, { "url": "https://github.com/eeenvik1/CVE-2023-51764", "tags": [ "x_transferred" ] }, { "url": "https://github.com/duy-31/CVE-2023-51764", "tags": [ "x_transferred" ] }, { "url": "https://www.youtube.com/watch?v=V8KPV96g1To", "tags": [ "x_transferred" ] }, { "name": "FEDORA-2024-c839e7294f", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRLF5SOS7TP5N7FQSEK2NFNB44ISVTZC/" }, { "name": "FEDORA-2024-5c186175f2", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQ5WXFCW2N6G2PH3JXDTYW5PH5EBQEGO/" }, { "url": "https://lwn.net/Articles/956533/", "tags": [ "x_transferred" ] }, { "url": "https://www.openwall.com/lists/oss-security/2024/01/22/1", "tags": [ "x_transferred" ] }, { "url": "https://www.postfix.org/announcements/postfix-3.8.5.html", "tags": [ "x_transferred" ] }, { "name": "[debian-lts-announce] 20240130 [SECURITY] [DLA 3725-1] postfix security update", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00020.html" }, { "name": "[oss-security] 20240508 Re: New SMTP smuggling attack", "tags": [ "mailing-list", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2024/05/09/3" } ] } ] }, "dataVersion": "5.1" }