{"schemaVersion":3,"id":"CVE-2021-41973","aliases":["UBUNTU-CVE-2021-41973","DEBIAN-CVE-2021-41973","CGA-ch87-cjff-9vj2","CGA-hg54-cmcg-mxj8","GHSA-6mcm-j9cj-3vc3"],"status":"published","duplicateOf":null,"title":null,"description":"In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. Please update MINA to 2.1.5 or greater.","dates":{"published":"2021-11-01T08:35:09.000Z","modified":"2024-08-04T03:22:25.568Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.04634,"percentile":0.916,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.04634},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.04655,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.04655,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.04655,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.04655,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.04634,"percentile":0.916}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.04634,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.04634,"percentile":0.916}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition ('Infinite Loop')","description":"The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/835.html"}],"affected":[{"vendor":"apache software foundation","product":"apache mina","name":"Apache MINA","label":"apache mina","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ Apache MINA, < 2.1.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ Apache MINA, < 2.1.5","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_mina"},{"vendor":"apache","product":"mina","name":"mina","label":"mina","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.0.22","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.1.0, < 2.1.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.0.22 | ≥ 2.1.0, < 2.1.5","eol":null,"hubHref":"/vendor/apache/mina"},{"vendor":"chainguard","product":"hadoop-fips-3.3.6","name":"hadoop-fips-3.3.6","label":"hadoop-fips-3.3.6","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/hadoop-fips-3.3.6","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"debian","product":"mina2","name":"mina2","label":"mina2","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/mina2","purlType":"deb","versions":[{"text":"< 2.1.5-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.1.5-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mina","name":"mina","label":"mina","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mina","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mina2","name":"mina2","label":"mina2","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mina2","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"org.apache.mina","product":"mina-core","name":"org.apache.mina:mina-core","label":"mina-core","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.apache.mina/mina-core","purlType":"maven","versions":[{"text":"≥ 2.1.0, < 2.1.5","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.22","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.1.0, < 2.1.5 | < 2.0.22","eol":null,"hubHref":null},{"vendor":"oracle","product":"banking_payments","name":"banking payments","label":"banking_payments","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"14.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"14.5","eol":null,"hubHref":"/vendor/oracle/banking_payments"},{"vendor":"oracle","product":"banking_trade_finance_process_management","name":"banking trade finance process management","label":"banking_trade_finance_process_management","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"14.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"14.5","eol":null,"hubHref":"/vendor/oracle/banking_trade_finance_process_management"},{"vendor":"oracle","product":"banking_treasury_management","name":"banking treasury management","label":"banking_treasury_management","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"14.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"14.5","eol":null,"hubHref":"/vendor/oracle/banking_treasury_management"},{"vendor":"oracle","product":"communications_cloud_native_core_console","name":"communications cloud native core console","label":"communications_cloud_native_core_console","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.9.0","eol":null,"hubHref":"/vendor/oracle/communications_cloud_native_core_console"},{"vendor":"oracle","product":"customer_management_and_segmentation_foundation","name":"customer management and segmentation foundation","label":"customer_management_and_segmentation_foundation","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"18.0","noFixRecorded":false,"fixedIn":null},{"text":"19.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"18.0 | 19.0","eol":null,"hubHref":"/vendor/oracle/customer_management_and_segmentation_foundation"},{"vendor":"oracle","product":"flexcube_universal_banking","name":"flexcube universal banking","label":"flexcube_universal_banking","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 14.0, ≤ 14.3","noFixRecorded":false,"fixedIn":null},{"text":"14.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 14.0, ≤ 14.3 | 14.5","eol":null,"hubHref":"/vendor/oracle/flexcube_universal_banking"},{"vendor":"oracle","product":"fusion_middleware_common_libraries_and_tools","name":"fusion middleware common libraries and tools","label":"fusion_middleware_common_libraries_and_tools","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"12.2.1.3.0","noFixRecorded":false,"fixedIn":null},{"text":"12.2.1.4.0","noFixRecorded":false,"fixedIn":null},{"text":"14.1.1.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"12.2.1.3.0 | 12.2.1.4.0 | 14.1.1.0.0","eol":null,"hubHref":"/vendor/oracle/fusion_middleware_common_libraries_and_tools"},{"vendor":"oracle","product":"oss_support_tools","name":"oss support tools","label":"oss_support_tools","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"2.12.42","noFixRecorded":false,"fixedIn":null}],"versionsText":"2.12.42","eol":null,"hubHref":"/vendor/oracle/oss_support_tools"}],"affectedCount":15,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://lists.apache.org/thread.html/r0b907da9340d5ff4e6c1a4798ef4e79700a668657f27cca8a39e9250%40%3Cdev.mina.apache.org%3E","label":"lists.apache.org/thread.html/…","hostname":"lists.apache.org","tags":["X Refsource MISC","FIX","WEB","Mailing List","Patch","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2021/11/01/2","label":"www.openwall.com/lists/oss-security/2021/11/01/2","hostname":"www.openwall.com","tags":["Mailing List","X Refsource MLIST","FIX","WEB","Patch","Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2021/11/01/8","label":"www.openwall.com/lists/oss-security/2021/11/01/8","hostname":"www.openwall.com","tags":["Mailing List","X Refsource MLIST","Advisory","WEB","Third Party Advisory"]},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","label":"www.oracle.com/security-alerts/cpuapr2022.html","hostname":"www.oracle.com","tags":["X Refsource MISC","FIX","WEB","Patch","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-41973","label":"ubuntu.com/security/CVE-2021-41973","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41973","label":"www.cve.org/CVERecord?id=CVE-2021-41973","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://lists.apache.org/thread/sq0kkqvxcp7xjt8gxdyb650nj8dv6qv0","label":"lists.apache.org/thread/sq0kkqvxcp7xjt8gxdyb650nj8dv6qv0","hostname":"lists.apache.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-41973","label":"security-tracker.debian.org/tracker/CVE-2021-41973","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41973","label":"nvd.nist.gov/vuln/detail/CVE-2021-41973","hostname":"nvd.nist.gov","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-11-01T08:35:09.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T03:22:25.568Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":27,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T12:12:24.269Z","stale":false,"partial":false}}