GitHub Advisoryadvisory · PyPI
GHSA-h3q4-6j7f-r24c priority vulnerable to denial of service
MEDIUM
Official page ↗
- Aliases
- CVE-2016-6580
- Ecosystem
- PyPI
- Packages
- priority
- Severity
- Moderate
- CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
- Reviewed
- 2024-08-30
Affected packages
• PyPI priority: < 1.2.0 → fixed in 1.2.0
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.
Related
Alias · CVE (1)
- CVE-2016-6580 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… vulnerability
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-6580 advisory
- https://github.com/python-hyper/priority/commit/7d01a7dc4db83bce50f20d47caf4f37b403a3ecd web
- https://github.com/pypa/advisory-database/tree/main/vulns/priority/PYSEC-2017-93.yaml web
- https://github.com/python-hyper/priority package
- https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html web
- https://web.archive.org/web/20160806004329/http://www.securityfocus.com/bid/92311 web