{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-45648", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2023-10-10T11:31:15.664Z", "datePublished": "2023-10-10T18:38:34.097Z", "dateUpdated": "2025-10-29T12:00:47.484Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Apache Tomcat", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "11.0.0-M11", "status": "affected", "version": "11.0.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "10.1.13", "status": "affected", "version": "10.1.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "9.0.81", "status": "affected", "version": "9.0.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "8.5.93", "status": "affected", "version": "8.5.0", "versionType": "semver"}, {"lessThan": "8.5.0", "status": "unknown", "version": "3", "versionType": "semver"}, {"lessThanOrEqual": "10.0.27", "status": "unknown", "version": "10.0.0-M1", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Keran Mu and Jianjun Chen from Tsinghua University and Zhongguancun Laboratory"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Improper Input Validation vulnerability in Apache Tomcat.<p>Tomcat&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93</span> did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.</p><p>Older, EOL versions may also be affected.<br></p><p><span style=\"background-color: var(--wht);\">Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.</span><br></p>"}], "value": "Improper Input Validation vulnerability in Apache Tomcat.Tomcat\u00a0from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.\n\nOlder, EOL versions may also be affected.\n\n\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue."}], "metrics": [{"other": {"content": {"text": "important"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "CWE-20 Improper Input Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2025-10-29T12:00:47.484Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"}], "source": {"discovery": "EXTERNAL"}, "title": "Apache Tomcat: Trailer header parsing too lenient", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T20:21:16.919Z"}, "title": "CVE Program Container", "references": [{"tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"}, {"url": "http://www.openwall.com/lists/oss-security/2023/10/10/10", "tags": ["x_transferred"]}, {"url": "https://www.debian.org/security/2023/dsa-5522", "tags": ["x_transferred"]}, {"url": "https://www.debian.org/security/2023/dsa-5521", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20231103-0007/", "tags": ["x_transferred"]}]}, {"affected": [{"vendor": "apache", "product": "tomcat", "cpes": ["cpe:2.3:a:apache:tomcat:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "11.0.0-m1", "status": "affected", "lessThanOrEqual": "11.0.0-m11", "versionType": "semver"}, {"version": "10.1.0-m1", "status": "affected", "lessThanOrEqual": "10.1.13", "versionType": "semver"}, {"version": "9.0.0-m1", "status": "affected", "lessThanOrEqual": "9.0.81", "versionType": "semver"}, {"version": "8.5.0", "status": "affected", "lessThanOrEqual": "8.5.93", "versionType": "semver"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-06-16T16:59:12.136875Z", "id": "CVE-2023-45648", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-08-21T13:49:43.621Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "http://www.openwall.com/lists/oss-security/2023/10/10/10", "tags": ["x_transferred"]}, {"url": "https://www.debian.org/security/2023/dsa-5522", "tags": ["x_transferred"]}, {"url": "https://www.debian.org/security/2023/dsa-5521", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20231103-0007/", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T20:21:16.919Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2023-45648", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-06-16T16:59:12.136875Z"}}}], "affected": [{"cpes": ["cpe:2.3:a:apache:tomcat:-:*:*:*:*:*:*:*"], "vendor": "apache", "product": "tomcat", "versions": [{"status": "affected", "version": "11.0.0-m1", "versionType": "semver", "lessThanOrEqual": "11.0.0-m11"}, {"status": "affected", "version": "10.1.0-m1", "versionType": "semver", "lessThanOrEqual": "10.1.13"}, {"status": "affected", "version": "9.0.0-m1", "versionType": "semver", "lessThanOrEqual": "9.0.81"}, {"status": "affected", "version": "8.5.0", "versionType": "semver", "lessThanOrEqual": "8.5.93"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-18T16:22:17.743Z"}}], "cna": {"title": "Apache Tomcat: Trailer header parsing too lenient", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Keran Mu and Jianjun Chen from Tsinghua University and Zhongguancun Laboratory"}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "important"}}}], "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Tomcat", "versions": [{"status": "affected", "version": "11.0.0-M1", "versionType": "semver", "lessThanOrEqual": "11.0.0-M11"}, {"status": "affected", "version": "10.1.0-M1", "versionType": "semver", "lessThanOrEqual": "10.1.13"}, {"status": "affected", "version": "9.0.0-M1", "versionType": "semver", "lessThanOrEqual": "9.0.81"}, {"status": "affected", "version": "8.5.0", "versionType": "semver", "lessThanOrEqual": "8.5.93"}, {"status": "unknown", "version": "3", "lessThan": "8.5.0", "versionType": "semver"}, {"status": "unknown", "version": "10.0.0-M1", "versionType": "semver", "lessThanOrEqual": "10.0.27"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "Improper Input Validation vulnerability in Apache Tomcat.Tomcat\u00a0from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.\n\nOlder, EOL versions may also be affected.\n\n\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.", "supportingMedia": [{"type": "text/html", "value": "Improper Input Validation vulnerability in Apache Tomcat.<p>Tomcat&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93</span> did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.</p><p>Older, EOL versions may also be affected.<br></p><p><span style=\"background-color: var(--wht);\">Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.</span><br></p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "CWE-20 Improper Input Validation"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2025-10-29T12:00:47.484Z"}}}, "cveMetadata": {"cveId": "CVE-2023-45648", "state": "PUBLISHED", "dateUpdated": "2025-10-29T12:00:47.484Z", "dateReserved": "2023-10-10T11:31:15.664Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2023-10-10T18:38:34.097Z", "assignerShortName": "apache"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE1F7111-22BD-489A-B2C9-E67E0D601824", "versionEndExcluding": "8.5.94", "versionStartIncluding": "8.5.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "37FCE624-DD65-4AC5-A602-BB66E0E54CFC", "versionEndExcluding": "9.0.81", "versionStartIncluding": "9.0.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "matchCriteriaId": "0995DE67-7E3B-4CFE-AB96-E2243F994755", "versionEndExcluding": "10.1.14", "versionStartIncluding": "10.1.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*", "matchCriteriaId": "9D0689FE-4BC0-4F53-8C79-34B21F9B86C2", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*", "matchCriteriaId": "89B129B2-FB6F-4EF9-BF12-E589A87996CF", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*", "matchCriteriaId": "8B6787B6-54A8-475E-BA1C-AB99334B2535", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*", "matchCriteriaId": "EABB6FBC-7486-44D5-A6AD-FFF1D3F677E1", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*", "matchCriteriaId": "E10C03BC-EE6B-45B2-83AE-9E8DFB58D7DB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*", "matchCriteriaId": "8A6DA0BE-908C-4DA8-A191-A0113235E99A", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*", "matchCriteriaId": "39029C72-28B4-46A4-BFF5-EC822CFB2A4C", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*", "matchCriteriaId": "1A2E05A3-014F-4C4D-81E5-88E725FBD6AD", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*", "matchCriteriaId": "166C533C-0833-41D5-99B6-17A4FAB3CAF0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*", "matchCriteriaId": "D3768C60-21FA-4B92-B98C-C3A2602D1BC4", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*", "matchCriteriaId": "DDD510FA-A2E4-4BAF-A0DE-F4E5777E9325", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*", "matchCriteriaId": "9F542E12-6BA8-4504-A494-DA83E7E19BD5", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*", "matchCriteriaId": "C2409CC7-6A85-4A66-A457-0D62B9895DC1", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*", "matchCriteriaId": "B392A7E5-4455-4B1C-8FAC-AE6DDC70689E", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*", "matchCriteriaId": "EF411DDA-2601-449A-9046-D250419A0E1A", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*", "matchCriteriaId": "D7D8F2F4-AFE2-47EA-A3FD-79B54324DE02", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*", "matchCriteriaId": "1B4FBF97-DE16-4E5E-BE19-471E01818D40", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*", "matchCriteriaId": "3B266B1E-24B5-47EE-A421-E0E3CC0C7471", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*", "matchCriteriaId": "29614C3A-6FB3-41C7-B56E-9CC3F45B04F0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*", "matchCriteriaId": "C6AB156C-8FF6-4727-AF75-590D0DCB3F9D", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*", "matchCriteriaId": "C0C5F004-F7D8-45DB-B173-351C50B0EC16", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*", "matchCriteriaId": "D1902D2E-1896-4D3D-9E1C-3A675255072C", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*", "matchCriteriaId": "49AAF4DF-F61D-47A8-8788-A21E317A145D", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*", "matchCriteriaId": "454211D0-60A2-4661-AECA-4C0121413FEB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*", "matchCriteriaId": "0686F977-889F-4960-8E0B-7784B73A7F2D", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*", "matchCriteriaId": "558703AE-DB5E-4DFF-B497-C36694DD7B24", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*", "matchCriteriaId": "ED6273F2-1165-47A4-8DD7-9E9B2472941B", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:*", "matchCriteriaId": "6D402B5D-5901-43EB-8E6A-ECBD512CE367", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:*", "matchCriteriaId": "33C71AE1-B38E-4783-BAC2-3CDA7B4D9EBA", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone11:*:*:*:*:*:*", "matchCriteriaId": "F6BD4180-D3E8-42AB-96B1-3869ECF47F6C", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone12:*:*:*:*:*:*", "matchCriteriaId": "64668CCF-DBC9-442D-9E0F-FD40E1D0DDB7", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone13:*:*:*:*:*:*", "matchCriteriaId": "FC64BB57-4912-481E-AE8D-C8FCD36142BB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone14:*:*:*:*:*:*", "matchCriteriaId": "49B43BFD-6B6C-4E6D-A9D8-308709DDFB44", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone15:*:*:*:*:*:*", "matchCriteriaId": "919C16BD-79A7-4597-8D23-2CBDED2EF615", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone16:*:*:*:*:*:*", "matchCriteriaId": "81B27C03-D626-42EC-AE4E-1E66624908E3", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone17:*:*:*:*:*:*", "matchCriteriaId": "BD81405D-81A5-4683-A355-B39C912DAD2D", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone18:*:*:*:*:*:*", "matchCriteriaId": "2DCE3576-86BC-4BB8-A5FB-1274744DFD7F", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone19:*:*:*:*:*:*", "matchCriteriaId": "5571F54A-2EAC-41B6-BDA9-7D33CFE97F70", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:*", "matchCriteriaId": "9846609D-51FC-4CDD-97B3-8C6E07108F14", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone20:*:*:*:*:*:*", "matchCriteriaId": "ED30E850-C475-4133-BDE3-74CB3768D787", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:*", "matchCriteriaId": "2E321FB4-0B0C-497A-BB75-909D888C93CB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:*", "matchCriteriaId": "3B0CAE57-AF7A-40E6-9519-F5C9F422C1BE", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:*", "matchCriteriaId": "7CB9D150-EED6-4AE9-BCBE-48932E50035E", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone6:*:*:*:*:*:*", "matchCriteriaId": "D334103F-F64E-4869-BCC8-670A5AFCC76C", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone7:*:*:*:*:*:*", "matchCriteriaId": "941FCF7B-FFB6-4967-95C7-BB3D32C73DAF", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone8:*:*:*:*:*:*", "matchCriteriaId": "CE1A9030-B397-4BA6-8E13-DA1503872DDB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:10.1.0:milestone9:*:*:*:*:*:*", "matchCriteriaId": "6284B74A-1051-40A7-9D74-380FEEEC3F88", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone1:*:*:*:*:*:*", "matchCriteriaId": "D1AA7FF6-E8E7-4BF6-983E-0A99B0183008", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone10:*:*:*:*:*:*", "matchCriteriaId": "57088BDD-A136-45EF-A8A1-2EBF79CEC2CE", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone11:*:*:*:*:*:*", "matchCriteriaId": "B32D1D7A-A04F-444E-8F45-BB9A9E4B0199", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone2:*:*:*:*:*:*", "matchCriteriaId": "2AAD52CE-94F5-4F98-A027-9A7E68818CB6", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone3:*:*:*:*:*:*", "matchCriteriaId": "F1F981F5-035A-4EDD-8A9F-481EE8BC7FF7", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone4:*:*:*:*:*:*", "matchCriteriaId": "03A171AF-2EC8-4422-912C-547CDB58CAAA", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone5:*:*:*:*:*:*", "matchCriteriaId": "538E68C4-0BA4-495F-AEF8-4EF6EE7963CF", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone6:*:*:*:*:*:*", "matchCriteriaId": "49350A6E-5E1D-45B2-A874-3B8601B3ADCC", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone7:*:*:*:*:*:*", "matchCriteriaId": "5F50942F-DF54-46C0-8371-9A476DD3EEA3", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone8:*:*:*:*:*:*", "matchCriteriaId": "D12C2C95-B79F-4AA4-8CE3-99A3EE7991AB", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:tomcat:11.0.0:milestone9:*:*:*:*:*:*", "matchCriteriaId": "98792138-DD56-42DF-9612-3BDC65EEC117", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Input Validation vulnerability in Apache Tomcat.Tomcat\u00a0from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.\n\nOlder, EOL versions may also be affected.\n\n\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue."}, {"lang": "es", "value": "Vulnerabilidad de validaci\u00f3n de entrada incorrecta en Apache Tomcat.Tomcat desde 11.0.0-M1 hasta 11.0.0-M11, desde 10.1.0-M1 hasta 10.1.13, desde 9.0.0-M1 hasta 9.0.81 y desde 8.5.0 hasta 8.5 .93 no analizaron correctamente los encabezados de las colas HTTP. Un encabezado de avance no v\u00e1lido y especialmente manipulado podr\u00eda hacer que Tomcat trate una sola solicitud como solicitudes m\u00faltiples, lo que genera la posibilidad de contrabando de solicitudes cuando est\u00e1 detr\u00e1s de un proxy inverso. Se recomienda a los usuarios actualizar a la versi\u00f3n 11.0.0-M12 en adelante, 10.1.14 en adelante, 9.0.81 en adelante o 8.5.94 en adelante, que solucionan el problema."}], "id": "CVE-2023-45648", "lastModified": "2025-08-07T11:15:27.957", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2023-10-10T19:15:09.690", "references": [{"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2023/10/10/10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20231103-0007/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5521"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5522"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "security@apache.org", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:0125", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "tomcat-1:9.0.62-27.el8_9.2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-01-10T00:00:00Z"}, {"advisory": "RHSA-2024:0474", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "tomcat-1:9.0.62-37.el9_3.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2023:7247", "cpe": "cpe:/a:redhat:jboss_fuse:7", "package": "tomcat", "product_name": "Red Hat Fuse 7.12.1", "release_date": "2023-11-15T00:00:00Z"}, {"advisory": "RHSA-2023:6207", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7", "package": "tomcat", "product_name": "Red Hat JBoss Web Server 5", "release_date": "2023-10-31T00:00:00Z"}, {"advisory": "RHSA-2023:6206", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el7", "package": "jws5-tomcat-0:9.0.62-18.redhat_00016.1.el7jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 7", "release_date": "2023-10-31T00:00:00Z"}, {"advisory": "RHSA-2023:6206", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el8", "package": "jws5-tomcat-0:9.0.62-18.redhat_00016.1.el8jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 8", "release_date": "2023-10-31T00:00:00Z"}, {"advisory": "RHSA-2023:6206", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el9", "package": "jws5-tomcat-0:9.0.62-18.redhat_00016.1.el9jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 9", "release_date": "2023-10-31T00:00:00Z"}, {"advisory": "RHSA-2024:4631", "cpe": "cpe:/a:redhat:openshift_devspaces:3::el8", "package": "devspaces/server-rhel8:3.15-3", "product_name": "Red Hat OpenShift Dev Spaces 3 Containers", "release_date": "2024-07-18T00:00:00Z"}], "bugzilla": {"description": "tomcat: incorrectly parsed http trailer headers can cause request smuggling", "id": "2243749", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2243749"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "verified"}, "cwe": "CWE-20", "details": ["Improper Input Validation vulnerability in Apache Tomcat.Tomcat\u00a0from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially \ncrafted, invalid trailer header could cause Tomcat to treat a single \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.", "A flaw was found in Apache Tomcat, where an improper input validation can occur. This flaw allows a malicious user to send a crafted request containing an invalid trailer header, which could be treated as multiple requests, potentially leading to request smuggling when behind a reverse proxy."], "mitigation": {"lang": "en:us", "value": "No mitigation is currently available for this flaw."}, "name": "CVE-2023-45648", "package_state": [{"cpe": "cpe:/a:redhat:a_mq_clients:2", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "A-MQ Clients 2"}, {"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:3", "fix_state": "Will not fix", "package_name": "tomcat", "product_name": "Red Hat build of Apache Camel for Spring Boot 3"}, {"cpe": "cpe:/a:redhat:optaplanner:::el6", "fix_state": "Will not fix", "package_name": "tomcat", "product_name": "Red Hat build of OptaPlanner 8"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_brms_platform:7", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat Decision Manager 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "pki-servlet-container", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:integration:1", "fix_state": "Will not fix", "package_name": "tomcat", "product_name": "Red Hat Integration Camel K 1"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Data Grid 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Out of support scope", "package_name": "tomcat", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:6", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat JBoss Web Server 6"}, {"cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "fix_state": "Affected", "package_name": "tomcat", "product_name": "Red Hat OpenShift Application Runtimes"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Out of support scope", "package_name": "tomcat", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:amq_streams:1", "fix_state": "Will not fix", "package_name": "tomcat", "product_name": "streams for Apache Kafka"}], "public_date": "2023-10-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-45648\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-45648\nhttp://www.openwall.com/lists/oss-security/2023/10/10/10\nhttps://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"], "statement": "The request smuggling is not guaranteed to have relevant information within every request and the scenario behind a reverse proxy which fails to handle the request too is necessary, hence the Moderate impact.\nThe Red Hat AMQ Broker team removed any tomcat dependencies in version 7.11.3. Please refer to https://errata.devel.redhat.com/advisory/121941.", "threat_severity": "Moderate"}

{}