{"id":"CVE-2023-45648","details":"Improper Input Validation vulnerability in Apache Tomcat.Tomcat 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 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.","aliases":["BIT-tomcat-2023-45648","GHSA-r6j3-px5g-cq3x"],"modified":"2026-04-16T04:35:25.801784808Z","published":"2023-10-10T19:15:09.690Z","related":["ALSA-2024:0125","ALSA-2024:0474","SUSE-SU-2023:4337-1","SUSE-SU-2023:4423-1","SUSE-SU-2024:0472-1","openSUSE-SU-2024:13382-1"],"references":[{"type":"ADVISORY","url":"https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2023/10/10/10"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231103-0007/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5521"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5522"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tomcat","events":[{"introduced":"e37b977db6f47e4380ad67114a49e8568951c953"},{"fixed":"36d4f7d698f71cd322204a3b242a97c54860fb8c"},{"introduced":"3c78e95e36268dfb76db1570f0cf49104fa6eabc"},{"fixed":"90a0120a60faf9a3a657b113a7e2cdda2112be91"},{"introduced":"934df02dc68e72b95a38f372017f1b89b0d13a76"},{"fixed":"5feba31fa86b38bd645bf9cc1ddee883ad7bc6a4"},{"introduced":"0"},{"last_affected":"29b07def810d335012e738b22ab44d4e232b50d1"},{"introduced":"0"},{"last_affected":"10e04de1946981261a734507f4a6d953e2a206fe"},{"introduced":"0"},{"last_affected":"65ddc3a3872ea41ca67fec7b6834c704b6893361"},{"introduced":"0"},{"last_affected":"b5a74e3c7913c560648f0ffedfbbb3ebe4318def"},{"introduced":"0"},{"last_affected":"de128d72af746184e035ff1b53629f08cb141a04"},{"introduced":"0"},{"last_affected":"aac670afe1226e10513021100fce8a12344743c6"},{"introduced":"0"},{"last_affected":"c2c8107f0cea4755497a85990807b883b66f6b57"},{"introduced":"0"},{"last_affected":"8c48678b110f3fbbe66f6dde0e45d2578fa92c29"},{"introduced":"0"},{"last_affected":"9c5edb840d9413c1408e7c191bc0e1bbfcd9e07f"},{"introduced":"0"},{"last_affected":"59e713216cf2256aacc54f6ba627865f356f9e4e"},{"introduced":"0"},{"last_affected":"7dc5e29fe49850102261badf158752d6865311e4"},{"introduced":"0"},{"last_affected":"18b014d8691909be6153ae7db022a6c35f9c93ea"},{"introduced":"0"},{"last_affected":"600dc8ba5d9be7599d29bff83c342213d93b034e"},{"introduced":"0"},{"last_affected":"3bd48aab236e5bf0ed1644e9f0c588fd20e503ab"},{"introduced":"0"},{"last_affected":"642d3dd4d50ea1f03f9827962e4fc982a123bb78"},{"introduced":"0"},{"last_affected":"24566c02fb917a6ca1b6479a60971b0d8acd895c"},{"introduced":"0"},{"last_affected":"cac0e029dcced854eeca7444710e78e412dc2c2a"},{"introduced":"0"},{"last_affected":"c5efed313de1a181f4f9f98f5023117f3b911257"},{"introduced":"0"},{"last_affected":"ab04166fac59fcf9b3be3aab1c8b896842782d4c"},{"introduced":"0"},{"last_affected":"35071e7e52f296b9187b054b0efd74121b7db3bd"},{"introduced":"0"},{"last_affected":"d1dc05e934e089ea8907998cf850760017a0ed82"},{"introduced":"0"},{"last_affected":"fd7f13635e6855f6ba3fead0bf37ba2fbf8b68cf"},{"introduced":"0"},{"last_affected":"c7b84102600d600bcc527560d9c4d10c3fd440ab"},{"introduced":"0"},{"last_affected":"d8ebf61e51b4455e3c226751e492a533f9002d48"},{"introduced":"0"},{"last_affected":"aba238718ac9b149d25feaa9a14ecad3b0e3a5e2"},{"introduced":"0"},{"last_affected":"fe854ab1f111396458d98fa2ab08c693ce9407e1"},{"introduced":"0"},{"last_affected":"45f8fd74cdb96490fab8709263a4d862f0d429cf"},{"introduced":"0"},{"last_affected":"f2ab9ac8bc3f40ee9b2cb50b030c99df927f0429"},{"introduced":"0"},{"last_affected":"dc3639dd7123301ced18dbf4ddf2dca93704870d"},{"introduced":"0"},{"last_affected":"049799677ba307378a256621bb1a7b03f597571c"},{"introduced":"0"},{"last_affected":"d08498a3cefa7206bad791acf019455794f865ea"},{"introduced":"0"},{"last_affected":"faa2582152d9dcbcb444700df340e10a85fc375f"},{"introduced":"0"},{"last_affected":"02e84c839def0228475fad85d0b19abc2f70b03f"},{"introduced":"0"},{"last_affected":"dcf3e81b2e709574971c7a9592614d70c1b55bf7"},{"introduced":"0"},{"last_affected":"02c4004b52be88a04a7372577d56da0f9ed3a7fe"},{"introduced":"0"},{"last_affected":"7a261dff58bc9581317c400b5c0fa4f7ae371fda"},{"introduced":"0"},{"last_affected":"ae9df1bcc169a5b03adea54c8c19ca9bd902e44f"},{"introduced":"0"},{"last_affected":"ff0b6c231b7a1a416688346fdd299a3d6cfb5b64"},{"introduced":"0"},{"last_affected":"0e59fedb28df646930c5aff945159b64d7a52260"},{"introduced":"0"},{"last_affected":"920e86e465fc9db8b0c21b684b42456179308cfd"},{"introduced":"0"},{"last_affected":"8778a44d6323c1066237043a89ab2f36696916b1"},{"introduced":"0"},{"last_affected":"e706972942e2c342e4a37baf5e2596f11e8a0e94"},{"introduced":"0"},{"last_affected":"2a10c8d9110d7b1c7f526f3352648c6b19ba2c52"},{"introduced":"0"},{"last_affected":"51d1031c36c0f2b3ee1e0d14b56228a559144153"},{"introduced":"0"},{"last_affected":"0f3f1e439a040068b741d77777766722e4420ad6"},{"introduced":"0"},{"last_affected":"cd53876fefaa370c31466b0f615e9ad026541a27"},{"introduced":"0"},{"last_affected":"02d546ba3c553c74ff1a99ecc166a6ff9c501ba8"},{"introdu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