PT-2016-7120 · Apache · Apache Tomcat

Published 2016-11-08 · Updated 2024-10-15 · CVE-2016-6817

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 8.5.0 through 8.5.6 Apache Tomcat versions 9.0.0.M1 through 9.0.0.M11

Description The HTTP/2 header parser in Apache Tomcat entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.

Recommendations For Apache Tomcat versions 8.5.0 through 8.5.6, update to a version outside of this range to resolve the issue. For Apache Tomcat versions 9.0.0.M1 through 9.0.0.M11, update to a version outside of this range to resolve the issue. As a temporary workaround, consider restricting the size of HTTP/2 headers to prevent the infinite loop condition.

Fix

DoS

Infinite Loop

Buffer Overflow

Weakness Enumeration

CWE-835

CWE-119

Related Identifiers

CVE-2016-6817

GHSA-698C-2X4J-G9GQ

Affected Products

Apache Tomcat

References · 26

• https://nvd.nist.gov/vuln/detail/CVE-2016-6817 · Security Note
• https://osv.dev/vulnerability/CVE-2016-6817 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-698c-2x4j-g9gq · Vendor Advisory
• https://github.com/apache/tomcat · Note
• https://github.com/apache/tomcat/commit/079372fc7bac8e2e378942715c9ce26a4a72c07a · Note
• https://github.com/apache/tomcat/commit/85c63227edabbfb4f2f500fc557480a190135d21 · Note
• http://securitytracker.com/id/1037330 · Note
• https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E · Note
• https://tomcat.apache.org/security-8 · Note
• https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E · Note
• https://tomcat.apache.org/security-9 · Note
• https://web.archive.org/web/20200227174145/http://securityfocus.com/bid/94462 · Note
• https://t.me/cvenotify/98178 · Telegram Post
• https://web.archive.org/web/20180115024458/http://securitytracker.com/id/1037330 · Note
• https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E · Note