VULNERABILITY INTELLIGENCE

CVE-2016-6817

CVSS score7.5 HIGH
EPSS probability7.19%
CISA KEVNot currently listed
Published2017-08-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Primary references