CVEvulnerability
CVE-2016-6580
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2017-01-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-399
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.
Affected configurations
• python python priority library 1.0.0
• python python priority library 1.1.0
• python python priority library 1.1.1
Related
Weakness · not in database (1)
References
- http://www.securityfocus.com/bid/92311 Third Party Advisory, VDB Entry
- https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html Mitigation, Vendor Advisory
- http://www.securityfocus.com/bid/92311 Third Party Advisory, VDB Entry
- https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html Mitigation, Vendor Advisory