CVE-2024-49769

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductAgendaless Waitress
PublishedOct 29, 2024
First seenOct 29, 2024
Weakness typeCWE-772CWE-772

How to fix

Update
  • agendaless waitress3.0.1 or later
  • waitress3.0.1 or later

Affected products

ProductAffected versionsFixed in
agendaless waitressv < 3.0.13.0.1
waitressPyPIv < 3.0.13.0.1

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