CVE-2023-51766

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/", "name": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/", "tags": ["Technical Description", "Third Party Advisory"], "refsource": ""}, {"url": "https://exim.org/static/doc/security/CVE-2023-51766.txt", "name": "https://exim.org/static/doc/security/CVE-2023-51766.txt", "tags": ["Broken Link"], "refsource": ""}, {"url": "https://bugs.exim.org/show_bug.cgi?id=3063", "name": "https://bugs.exim.org/show_bug.cgi?id=3063", "tags": ["Issue Tracking", "Vendor Advisory"], "refsource": ""}, {"url": "https://www.openwall.com/lists/oss-security/2023/12/23/2", "name": "https://www.openwall.com/lists/oss-security/2023/12/23/2", "tags": ["Issue Tracking", "Mailing List", "Third Party Advisory"], "refsource": ""}, {"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", "Third Party Advisory"], "refsource": ""}, {"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", "Third Party Advisory"], "refsource": ""}, {"url": "https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca", "name": "https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca", "tags": ["Patch"], "refsource": ""}, {"url": "https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5", "name": "https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5", "tags": ["Patch"], "refsource": ""}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255852", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2255852", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": ""}, {"url": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html", "name": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html", "tags": ["Technical Description"], "refsource": ""}, {"url": "http://www.openwall.com/lists/oss-security/2023/12/29/2", "name": "[oss-security] 20231229 CVE-2023-51766: Exim: SMTP smuggling", "tags": ["Mailing List", "Mitigation", "Third Party Advisory"], "refsource": ""}, {"url": "https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766", "name": "https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766", "tags": ["Mitigation", "Vendor Advisory"], "refsource": ""}, {"url": "http://www.openwall.com/lists/oss-security/2024/01/01/1", "name": "[oss-security] 20240101 Re: CVE-2023-51766: Exim: SMTP smuggling", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "http://www.openwall.com/lists/oss-security/2024/01/01/2", "name": "[oss-security] 20240101 Re: CVE-2023-51766: Exim: SMTP smuggling", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "http://www.openwall.com/lists/oss-security/2024/01/01/3", "name": "[oss-security] 20240101 Re: CVE-2023-51766: Exim: SMTP smuggling", "tags": ["Mailing List", "Third Party Advisory"], "refsource": ""}, {"url": "https://www.youtube.com/watch?v=V8KPV96g1To", "name": "https://www.youtube.com/watch?v=V8KPV96g1To", "tags": [], "refsource": ""}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html", "name": "[debian-lts-announce] 20240105 [SECURITY] [DLA 3708-1] exim4 security update", "tags": [], "refsource": ""}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/", "name": "FEDORA-2024-1ef6197a49", "tags": [], "refsource": ""}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/", "name": "FEDORA-2024-e0841c83bb", "tags": [], "refsource": ""}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-345"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2023-51766", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}}, "publishedDate": "2023-12-24T06:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.97.1"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2024-01-12T03:15Z"}