{"id":"GHSA-h3q4-6j7f-r24c","summary":"priority vulnerable to denial of service","details":"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.","aliases":["CVE-2016-6580","PYSEC-2017-93"],"modified":"2024-08-30T23:57:22.774061Z","published":"2022-05-17T03:02:35Z","database_specific":{"nvd_published_at":"2017-01-10T15:59:00Z","cwe_ids":["CWE-770"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-08-30T23:37:23Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6580"},{"type":"WEB","url":"https://github.com/python-hyper/priority/commit/7d01a7dc4db83bce50f20d47caf4f37b403a3ecd"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/priority/PYSEC-2017-93.yaml"},{"type":"PACKAGE","url":"https://github.com/python-hyper/priority"},{"type":"WEB","url":"https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html"},{"type":"WEB","url":"https://web.archive.org/web/20160806004329/http://www.securityfocus.com/bid/92311"}],"affected":[{"package":{"name":"priority","ecosystem":"PyPI","purl":"pkg:pypi/priority"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0"}]}],"versions":["0.0.1","1.0.0","1.1.0","1.1.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-h3q4-6j7f-r24c/GHSA-h3q4-6j7f-r24c.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U"}]}