CVE-2016-6580

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
10/01/2017
Last modified:
20/04/2025

Description

A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority information for each stream, and would therefore allocate unbounded amounts of memory. Attempting to actually use a tree like this would also cause extremely high CPU usage to maintain the tree.

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:python:python_priority_library:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:python:python_priority_library:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:python:python_priority_library:1.1.1:*:*:*:*:*:*:*