CVE-2024-49768
waitress vulnerability - agendaless
Description
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
Affected Systems
| Vendor | agendaless |
| Product | waitress |
| Affected Versions | from 2.0.0 before 3.0.1 |
| CWE ID | CWE-367 |
Mitigation
Apply the latest security patches from the vendor, restrict network exposure where applicable, and monitor for exploitation attempts.
Fix Instructions
Refer to the vendor advisory and apply the latest security updates. See references for detailed patching instructions.
References
Risk Assessment
CVSS: 9.1/10
| Exploit Available | Unknown |
| Patch Available | Yes |
Need Help Patching?
Our security team can help assess and remediate this vulnerability in your environment.
Get HelpStay Ahead of Threats
Subscribe to our vulnerability feed and get instant alerts when new CVEs affect your systems.
Start Monitoring