CVE-2024-49769

unknown

Published 2024-10-29 · Modified 2025-01-19

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CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

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not yet in upstream

VIR risk

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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.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`2.1.2-2+deb12u1`
debian	bullseye	fixed	`1.4.4-1.1+deb11u2`
debian	forky	fixed	`3.0.1-1`
debian	sid	fixed	`3.0.1-1`
debian	trixie	fixed	`3.0.1-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	waitress	`<3.0.1`	`3.0.1`
PyPI	waitress	`<1ae4e894c9f76543bee06584001583fc6fa8c95c\|\|<3.0.1`	`1ae4e894c9f76543bee06584001583fc6fa8c95c`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.