{"id":"CVE-2020-27223","aliases":["BIT-nifi-2020-27223","BIT-solr-2020-27223","BIT-spark-2020-27223","DEBIAN-CVE-2020-27223","DSA-4949-1","EUVD-2021-0679","GHSA-m394-8rww-3jr7","OESA-2021-1166","RHSA-2021:2431","RHSA-2021:2499","RHSA-2021:2517","SUSE-SU-2021:0940-1","UBUNTU-CVE-2020-27223","openSUSE-SU-2024:10878-1"],"status":"published","title":"DOS vulnerability for Quoted Quality CSV headers","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality 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Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T21:55:13Z","modified":"2025-08-20T10:03:37.386Z","cvss":[{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:35:53.552996Z"}],"euvd":[{"id":"EUVD-2021-0679","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T21:55:13Z","modified":"2025-08-20T10:03:37Z","cvss":[{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T20:31:55.522078Z"}],"ghsa":[{"id":"GHSA-m394-8rww-3jr7","title":"DOS vulnerability for Quoted Quality CSV headers","description":"### Impact\nWhen Jetty handles a request containing request headers with a large number of “quality” (i.e. q) parameters (such as what are seen on the `Accept`, `Accept-Encoding`, and `Accept-Language` request headers), the server may enter a denial of service (DoS) state due to high CPU usage while sorting the list of values based on their quality values.  A single request can easily consume minutes of CPU time before it is even dispatched to the application.\n\nThe only features within Jetty that can trigger this behavior are:\n\n- Default Error Handling - the `Accept` request header with the `QuotedQualityCSV` is used to determine what kind of content to send back to the client (html, text, json, xml, etc)\n- `StatisticsServlet` - uses the `Accept` request header with the `QuotedQualityCSV` to determine what kind of content to send back to the client (xml, json, text, html, etc)\n- `HttpServletRequest.getLocale()` - uses the `Accept-Language` request header with the `QuotedQualityCSV` to determine which “preferred” language is returned on this call.\n- `HttpservletRequest.getLocales()` - is similar to the above, but returns an ordered list of locales based on the quality values on the `Accept-Language` request header.\n- `DefaultServlet` - uses the `Accept-Encoding` request header with the `QuotedQualityCSV` to determine which kind of pre-compressed content should be sent back for static content (content that is not matched against a url-pattern in your web app)\n\n### Versions\n`QuotedQualityCSV` was introduced to Jetty 9.3.9.v20160517 and the bug that introduced the vulnerability was in 9.4.6.v20170531. \n\nCurrently, known vulnerable versions include:\n\n- 9.4.6.v20170531 thru to 9.4.36.v20210114\n- 10.0.0\n- 11.0.0\n\n### Workarounds\n\nQuality ordered values are used infrequently by jetty so they can be avoided by:\n\n * Do not use the default error page/handler.\n * Do not deploy the `StatisticsServlet` exposed to the network\n * Do not call `getLocale` API\n * Do not enable precompressed static content in the `DefaultServlet` \n\n### Patches\n\nAll patches are available for download from the Eclipse Jetty website at [https://www.eclipse.org/jetty/download.php](https://www.eclipse.org/jetty/download.php)\n- 9.4.37.v20210219 and greater\n- 10.0.1 and greater \n- 11.0.1 and greater","status":"published","published":"2021-03-10T03:46:47Z","modified":"2023-02-01T05:05:09Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:36:32.918681Z"}],"nvd":[{"id":"CVE-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T22:15:19.317Z","modified":"2026-06-17T03:08:59.647Z","cvss":[{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-407","CWE-400"],"updated_at":"2026-11-02T14:06:37.687844Z"}],"osv":[{"id":"CVE-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T22:15:19.317Z","modified":"2026-10-24T14:06:26.166246673Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:16.248747Z"},{"id":"DEBIAN-CVE-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T22:15:19.317Z","modified":"2026-10-26T12:02:41.653878027Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"GHSA-m394-8rww-3jr7","title":"DOS vulnerability for Quoted Quality CSV headers","description":"### Impact\nWhen Jetty handles a request containing request headers with a large number of “quality” (i.e. q) parameters (such as what are seen on the `Accept`, `Accept-Encoding`, and `Accept-Language` request headers), the server may enter a denial of service (DoS) state due to high CPU usage while sorting the list of values based on their quality values.  A single request can easily consume minutes of CPU time before it is even dispatched to the application.\n\nThe only features within Jetty that can trigger this behavior are:\n\n- Default Error Handling - the `Accept` request header with the `QuotedQualityCSV` is used to determine what kind of content to send back to the client (html, text, json, xml, etc)\n- `StatisticsServlet` - uses the `Accept` request header with the `QuotedQualityCSV` to determine what kind of content to send back to the client (xml, json, text, html, etc)\n- `HttpServletRequest.getLocale()` - uses the `Accept-Language` request header with the `QuotedQualityCSV` to determine which “preferred” language is returned on this call.\n- `HttpservletRequest.getLocales()` - is similar to the above, but returns an ordered list of locales based on the quality values on the `Accept-Language` request header.\n- `DefaultServlet` - uses the `Accept-Encoding` request header with the `QuotedQualityCSV` to determine which kind of pre-compressed content should be sent back for static content (content that is not matched against a url-pattern in your web app)\n\n### Versions\n`QuotedQualityCSV` was introduced to Jetty 9.3.9.v20160517 and the bug that introduced the vulnerability was in 9.4.6.v20170531. \n\nCurrently, known vulnerable versions include:\n\n- 9.4.6.v20170531 thru to 9.4.36.v20210114\n- 10.0.0\n- 11.0.0\n\n### Workarounds\n\nQuality ordered values are used infrequently by jetty so they can be avoided by:\n\n * Do not use the default error page/handler.\n * Do not deploy the `StatisticsServlet` exposed to the network\n * Do not call `getLocale` API\n * Do not enable precompressed static content in the `DefaultServlet` \n\n### Patches\n\nAll patches are available for download from the Eclipse Jetty website at [https://www.eclipse.org/jetty/download.php](https://www.eclipse.org/jetty/download.php)\n- 9.4.37.v20210219 and greater\n- 10.0.1 and greater \n- 11.0.1 and greater","status":"published","published":"2021-03-10T03:46:47Z","modified":"2026-07-08T06:00:24.181618847Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:51.10002Z"},{"id":"OESA-2021-1166","title":"jetty security update","description":"%global desc \\ Jetty is a 100% Java HTTP Server and Servlet Container. This means that you\\ do not need to configure and run a separate web server (like Apache) in order\\ to use Java, servlets and JSPs to generate dynamic content. Jetty is a fully\\ featured web server for static and dynamic content. Unlike separate\\ server/container solutions, this means that your web server and web\\ application run in the same process, without interconnection overheads\\ and complications. Furthermore, as a pure java component, Jetty can be simply\\ included in your application for demonstration, distribution or deployment.\\ Jetty is available on all Java supported platforms. %{desc} %global extdesc %{desc}\\ \\ This package contains\r\n\r\nSecurity Fix(es):\r\n\r\nIn Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.(CVE-2020-27223)\r\n\r\nIn Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.(CVE-2021-28165)","status":"published","published":"2021-05-06T11:04:24Z","modified":"2026-08-18T01:15:31.050381873Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"RHSA-2021:2431","title":"Red Hat Security Advisory: OpenShift Container Platform 4.5.41 security update","status":"published","published":"2024-09-16T05:56:15Z","modified":"2026-10-13T10:02:21Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RHSA-2021:2499","title":"Red Hat Security Advisory: OpenShift Container Platform 4.6.36 security update","status":"published","published":"2024-09-14T00:42:48Z","modified":"2026-10-13T10:02:22Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RHSA-2021:2517","title":"Red Hat Security Advisory: OpenShift Container Platform 3.11.462 bug fix and security update","status":"published","published":"2024-09-16T05:56:07Z","modified":"2026-10-13T10:02:22Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"UBUNTU-CVE-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2021-02-26T22:15:00Z","modified":"2025-10-24T04:48:50Z","cvss":[{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"},{"id":"BIT-nifi-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2025-09-12T11:46:41.115Z","modified":"2026-09-10T16:01:44.101095388Z","updated_at":"2026-11-02T15:28:34.007508Z"},{"id":"BIT-solr-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2024-03-06T11:07:09.675Z","modified":"2026-09-10T16:01:46.2740402Z","updated_at":"2026-11-02T15:28:35.111822Z"},{"id":"BIT-spark-2020-27223","description":"In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.","status":"published","published":"2024-03-06T11:06:09.866Z","modified":"2026-09-10T16:01:46.320370093Z","updated_at":"2026-11-02T15:28:35.111822Z"},{"id":"DSA-4949-1","title":"jetty9 - security update","status":"published","published":"2021-08-05T00:00:00Z","modified":"2026-03-09T02:10:15.297281Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"openSUSE-SU-2024:10878-1","title":"jetty-annotations-9.4.43-1.2 on GA media","description":"These are all security issues fixed in the jetty-annotations-9.4.43-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:44:09.055501Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"SUSE-SU-2021:0940-1","title":"Security update for jetty-minimal","description":"This update for jetty-minimal fixes the following issues:\n\n- jetty-minimal was upgraded to version 9.4.38.v20210224\n  - CVE-2020-27223: Fixed an issue with Accept request header which might have led to Denial of Service (bsc#1182898).\n","status":"published","published":"2021-03-24T11:25:24Z","modified":"2026-02-04T02:13:52.43736Z","updated_at":"2026-11-02T15:53:48.690034Z"}]}}