cve-2024-49769
Vulnerability from cvelistv5
Published
2024-10-29 14:18
Modified
2024-11-17 00:11
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS score ?
0.51% (0.63907)
Summary
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.
References
security-advisories@github.comhttps://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95cPatch
security-advisories@github.comhttps://github.com/Pylons/waitress/issues/418Issue Tracking
security-advisories@github.comhttps://github.com/Pylons/waitress/pull/435Patch
security-advisories@github.comhttps://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html
Impacted products
Vendor Product Version
Pylons waitress Version: < 3.0.1
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