CVE-2024-49769
waitress - security update
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.
How to fix CVE-2024-49769
To remediate CVE-2024-49769, upgrade the affected package to a fixed version below.
- —upgrade to 1.4.4-1.1+deb11u2 or later
- —upgrade to 1.4.4-1.1+deb11u2 or later
- —upgrade to 3.0.1 or later
- —upgrade to 1ae4e894c9f76543bee06584001583fc6fa8c95c or later
Is CVE-2024-49769 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1.4.4-1.1+deb11u2
- from 0, < 1.4.4-1.1+deb11u2
- from 0, < 3.0.1
- from 0, < 1ae4e894c9f76543bee06584001583fc6fa8c95c | from 0, < 3.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |