Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2016-6817

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
10/08/2017
Last modified:
20/04/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
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:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools