High severity7.5NVD Advisory· Published Aug 10, 2017· Updated Jun 17, 2026
CVE-2016-6817
CVE-2016-6817
Description
The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.tomcat:tomcatMaven | >= 9.0.0.M1, < 9.0.0.M12 | 9.0.0.M12 |
org.apache.tomcat:tomcatMaven | >= 8.5.0, < 8.5.8 | 8.5.8 |
Affected products
20cpe:2.3:a:apache:tomcat:8.5.0:*:*:*:*:*:*:*+ 17 more
- cpe:2.3:a:apache:tomcat:8.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
- 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:milestone2:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
- 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:*:*:*:*:*:*
- Apache Software Foundation/Apache Tomcatv5Range: 9.0.0.M1 to 9.0.0.M11
Patches
Vulnerability mechanics
References
20- www.securityfocus.com/bid/94462nvdThird Party AdvisoryVDB EntryWEB
- www.securitytracker.com/id/1037330nvdThird Party AdvisoryVDB EntryWEB
- github.com/advisories/GHSA-698c-2x4j-g9gqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2016-6817ghsaADVISORY
- github.com/apache/tomcat/commit/079372fc7bac8e2e378942715c9ce26a4a72c07aghsaWEB
- github.com/apache/tomcat/commit/85c63227edabbfb4f2f500fc557480a190135d21ghsaWEB
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3EnvdWEB
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3EghsaWEB
- lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3EnvdWEB
- lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3EghsaWEB
- lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3EnvdWEB
- lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3EghsaWEB
- lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a%40%3Cannounce.tomcat.apache.org%3EnvdWEB
- lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a@%3Cannounce.tomcat.apache.org%3EghsaWEB
- lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3EnvdWEB
- lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3EghsaWEB
- security.netapp.com/advisory/ntap-20180607-0001ghsaWEB
- web.archive.org/web/20180115024458/http://www.securitytracker.com/id/1037330ghsaWEB
- web.archive.org/web/20200227174145/http://www.securityfocus.com/bid/94462ghsaWEB
- security.netapp.com/advisory/ntap-20180607-0001/nvd
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