{"id":"PYSEC-2024-211","details":"Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.","aliases":["CVE-2024-49769","GHSA-3f84-rpwh-47g6"],"modified":"2025-01-19T19:57:14.171389Z","published":"2024-10-29T15:15:12Z","references":[{"type":"ADVISORY","url":"https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6"},{"type":"FIX","url":"https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c"},{"type":"FIX","url":"https://github.com/Pylons/waitress/pull/435"},{"type":"REPORT","url":"https://github.com/Pylons/waitress/issues/418"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html"}],"affected":[{"package":{"name":"waitress","ecosystem":"PyPI","purl":"pkg:pypi/waitress"},"ranges":[{"type":"GIT","repo":"https://github.com/pylons/waitress","events":[{"introduced":"0"},{"fixed":"1ae4e894c9f76543bee06584001583fc6fa8c95c"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.1"}]}],"versions":["0.1","0.2","0.3","0.4","0.5","0.6","0.6.1","0.7","0.8","0.8.1","0.8.10","0.8.11b0","0.8.2","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.8.9","0.9.0","0.9.0b0","0.9.0b1","1.0.0","1.0.1","1.0.2","1.0a1","1.0a2","1.1.0","1.2.0","1.2.0b1","1.2.0b2","1.2.0b3","1.2.1","1.3.0","1.3.0b0","1.3.1","1.4.0","1.4.1","1.4.2","1.4.3","1.4.4","2.0.0","2.0.0b0","2.0.0b1","2.1.0","2.1.0b0","2.1.1","2.1.2","3.0.0"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/waitress/PYSEC-2024-211.yaml"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}