{"schema_version":"1.9.0","id":"CVE-2020-13934","published":"2020-07-14T15:15:11.007Z","modified":"2026-08-27T11:46:32.172479467Z","aliases":["BIT-tomcat-2020-13934","GHSA-vf77-8h7g-gghp"],"related":["SUSE-SU-2020:2037-1","SUSE-SU-2020:2045-1","SUSE-SU-2020:2046-1","SUSE-SU-2020:2047-1","SUSE-SU-2026:1058-1","openSUSE-SU-2020:1102-1","openSUSE-SU-2020:1111-1","openSUSE-SU-2024:12103-1","openSUSE-SU-2024:13441-1"],"details":"An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tomcat","events":[{"introduced":"389365303d986b2a918bc95f39421b27a2c9ff30"},{"last_affected":"4560d2f5a49965f73ed07cb879f17d9c096c9d13"},{"introduced":"3c78e95e36268dfb76db1570f0cf49104fa6eabc"},{"last_affected":"247c8e5ad08cdcd829a0bfc6374ecb3da0e5838e"},{"introduced":"10e04de1946981261a734507f4a6d953e2a206fe"},{"last_affected":"27f7ef8cd0c637b700d564ec20f6ff92901f6b5c"}],"database_specific":{"cpe":["cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*","cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.5.1"},{"last_affected":"8.5.56"},{"introduced":"9.0.1"},{"last_affected":"9.0.36"},{"introduced":"9.0.0-milestone10"},{"last_affected":"9.0.0-milestone10"},{"introduced":"9.0.0-milestone11"},{"last_affected":"9.0.0-milestone11"},{"introduced":"9.0.0-milestone12"},{"last_affected":"9.0.0-milestone12"},{"introduced":"9.0.0-milestone13"},{"last_affected":"9.0.0-milestone13"},{"introduced":"9.0.0-milestone14"},{"last_affected":"9.0.0-milestone14"},{"introduced":"9.0.0-milestone15"},{"last_affected":"9.0.0-milestone15"},{"introduced":"9.0.0-milestone16"},{"last_affected":"9.0.0-milestone16"},{"introduced":"9.0.0-milestone17"},{"last_affected":"9.0.0-milestone17"},{"introduced":"9.0.0-milestone18"},{"last_affected":"9.0.0-milestone18"},{"introduced":"9.0.0-milestone19"},{"last_affected":"9.0.0-milestone19"},{"introduced":"9.0.0-milestone20"},{"last_affected":"9.0.0-milestone20"},{"introduced":"9.0.0-milestone21"},{"last_affected":"9.0.0-milestone21"},{"introduced":"9.0.0-milestone22"},{"last_affected":"9.0.0-milestone22"},{"introduced":"9.0.0-milestone23"},{"last_affected":"9.0.0-milestone23"},{"introduced":"9.0.0-milestone24"},{"last_affected":"9.0.0-milestone24"},{"introduced":"9.0.0-milestone25"},{"last_affected":"9.0.0-milestone25"},{"introduced":"9.0.0-milestone26"},{"last_affected":"9.0.0-milestone26"},{"introduced":"9.0.0-milestone27"},{"last_affected":"9.0.0-milestone27"},{"introduced":"9.0.0-milestone5"},{"last_affected":"9.0.0-milestone5"},{"introduced":"9.0.0-milestone6"},{"last_affected":"9.0.0-milestone6"},{"introduced":"9.0.0-milestone7"},{"last_affected":"9.0.0-milestone7"},{"introduced":"9.0.0-milestone8"},{"last_affected":"9.0.0-milestone8"},{"introduced":"9.0.0-milestone9"},{"last_affected":"9.0.0-milestone9"},{"introduced":"10.0.0-milestone1"},{"last_affected":"10.0.0-milestone1"},{"introduced":"10.0.0-milestone2"},{"last_affected":"10.0.0-milestone2"},{"introduced":"10.0.0-milestone3"},{"last_affected":"10.0.0-milestone3"},{"introduced":"10.0.0-milestone4"},{"last_affected":"10.0.0-milestone4"},{"introduced":"10.0.0-milestone5"},{"last_affected":"10.0.0-milestone5"},{"introduced":"10.0.0-milestone6"},{"last_affected":"10.0.0-milestone6"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["10.0.0-milestone1","10.0.0-milestone2","10.0.0-milestone3","10.0.0-milestone4","10.0.0-milestone5","10.0.0-milestone6","9.0.0-milestone10","9.0.0-milestone11","9.0.0-milestone12","9.0.0-milestone13","9.0.0-milestone14","9.0.0-milestone15","9.0.0-milestone16","9.0.0-milestone17","9.0.0-milestone18","9.0.0-milestone19","9.0.0-milestone20","9.0.0-milestone21","9.0.0-milestone22","9.0.0-milestone23","9.0.0-milestone24","9.0.0-milestone25","9.0.0-milestone26","9.0.0-milestone27","9.0.0-milestone5","9.0.0-milestone6","9.0.0-milestone7","9.0.0-milestone8","9.0.0-milestone9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13934.json"}}],"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200724-0003/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4596-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4727"},{"type":"FIX","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuApr2021.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuoct2020.html"}],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"3.0.0"},{"last_affected":"3.1.3"}],"source":"CPE_RANGE","vendor_product":"netapp:oncommand_system_manager"},{"cpes":["cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"8.0.21"}],"source":"CPE_RANGE","vendor_product":"oracle:mysql_enterprise_monitor"},{"cpes":["cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"20.12"}],"source":"CPE_RANGE","vendor_product":"oracle:siebel_ui_framework"},{"cpes":["cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"],"extracted_events":[{"introduced":"20.04"},{"last_affected":"20.04"}],"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux"},{"cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.0"},{"last_affected":"9.0"},{"introduced":"10.0"},{"last_affected":"10.0"}],"source":"CPE_STRING","vendor_product":"debian:debian_linux"},{"cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*","cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.1"},{"last_affected":"15.1"},{"introduced":"15.2"},{"last_affected":"15.2"}],"source":"CPE_STRING","vendor_product":"opensuse:leap"},{"cpes":["cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"6.2.1.0"},{"last_affected":"6.2.1.0"}],"source":"CPE_STRING","vendor_product":"oracle:agile_engineering_data_management"},{"cpes":["cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3:*:*:*:*:*:*:*","cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.5:*:*:*:*:*:*:*","cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.3.3"},{"last_affected":"9.3.3"},{"introduced":"9.3.5"},{"last_affected":"9.3.5"},{"introduced":"9.3.6"},{"last_affected":"9.3.6"}],"source":"CPE_STRING","vendor_product":"oracle:agile_product_lifecycle_management"},{"cpes":["cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.5.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"10.0.1.5.0"},{"last_affected":"10.0.1.5.0"}],"source":"CPE_STRING","vendor_product":"oracle:communications_instant_messaging_server"},{"cpes":["cpe:2.3:a:oracle:fmw_platform:12.2.1.3.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:fmw_platform:12.2.1.4.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"12.2.1.3.0"},{"last_affected":"12.2.1.3.0"},{"introduced":"12.2.1.4.0"},{"last_affected":"12.2.1.4.0"}],"source":"CPE_STRING","vendor_product":"oracle:fmw_platform"},{"cpes":["cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*","cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*","cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"17.1"},{"last_affected":"17.1"},{"introduced":"17.2"},{"last_affected":"17.2"},{"introduced":"17.3"},{"last_affected":"17.3"}],"source":"CPE_STRING","vendor_product":"oracle:instantis_enterprisetrack"},{"cpes":["cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:*","cpe:2.3:a:oracle:managed_file_transfer:12.2.1.4.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"12.2.1.3.0"},{"last_affected":"12.2.1.3.0"},{"introduced":"12.2.1.4.0"},{"last_affected":"12.2.1.4.0"}],"source":"CPE_STRING","vendor_product":"oracle:managed_file_transfer"},{"cpes":["cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*","cpe:2.3:a:oracle:workload_manager:18c:*:*:*:*:*:*:*","cpe:2.3:a:oracle:workload_manager:19c: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