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GHSA-m394-8rww-3jr7

Dashboard / Vulnerabilities / GHSA-m394-8rww-3jr7

GHSA-m394-8rww-3jr7

Published: 10 Mar 2021Last Modified: 8 Jul 2026

Aliases:

BIT-nifi-2020-27223

BIT-solr-2020-27223

BIT-spark-2020-27223

Summary: DOS vulnerability for Quoted Quality CSV headers

Details: ### Impact When 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. The only features within Jetty that can trigger this behavior are: - 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) - `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) - `HttpServletRequest.getLocale()` - uses the `Accept-Language` request header with the `QuotedQualityCSV` to determine which “preferred” language is returned on this call. - `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. - `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) ### Versions `QuotedQualityCSV` was introduced to Jetty 9.3.9.v20160517 and the bug that introduced the vulnerability was in 9.4.6.v20170531. Currently, known vulnerable versions include: - 9.4.6.v20170531 thru to 9.4.36.v20210114 - 10.0.0 - 11.0.0 ### Workarounds Quality ordered values are used infrequently by jetty so they can be avoided by: * Do not use the default error page/handler. * Do not deploy the `StatisticsServlet` exposed to the network * Do not call `getLocale` API * Do not enable precompressed static content in the `DefaultServlet` ### Patches All 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) - 9.4.37.v20210219 and greater - 10.0.1 and greater - 11.0.1 and greater

Affected packages

Package

Name: org.eclipse.jetty:jetty-server

Purl: pkg:maven/org.eclipse.jetty/jetty-server

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 9.4.6

Fixed -9.4.37

Affected versions

9.4.10.RC0

9.4.10.RC1

9.4.10.v20180503

9.4.11.v20180605

9.4.12.RC0

9.4.12.RC1

9.4.12.RC2

9.4.12.v20180830

9.4.13.v20181111

9.4.14.v20181114

9.4.15.v20190215

9.4.16.v20190411

9.4.17.v20190418

9.4.18.v20190429

9.4.19.v20190610

9.4.20.v20190813

9.4.21.v20190926

9.4.22.v20191022

9.4.23.v20191118

9.4.24.v20191120

9.4.25.v20191220

9.4.26.v20200117

9.4.27.v20200227

9.4.28.v20200408

9.4.29.v20200521

9.4.30.v20200611

9.4.31.v20200723

9.4.32.v20200930

9.4.33.v20201020

9.4.34.v20201102

9.4.35.v20201120

9.4.36.v20210114

9.4.6.v20170531

9.4.6.v20180619

9.4.7.RC0

9.4.7.v20170914

9.4.7.v20180619

9.4.8.v20171121

9.4.8.v20180619

9.4.9.v20180320

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High