CVE-2024-49769

Description

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.

Reserved 2024-10-18 | Published 2024-10-29 | Updated 2024-11-17 | Assigner GitHub_M

Problem types

CWE-772: Missing Release of Resource after Effective Lifetime

Product status

< 3.0.1
affected

References

github.com/...itress/security/advisories/GHSA-3f84-rpwh-47g6

github.com/Pylons/waitress/issues/418

github.com/Pylons/waitress/pull/435

github.com/...ommit/1ae4e894c9f76543bee06584001583fc6fa8c95c

cve.org (CVE-2024-49769)

nvd.nist.gov (CVE-2024-49769)

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