Security Bulletin: Waitress WSGI Server Vulnerability: HTTP Pipelining Request Handling with Disabled Lookahead

Summary Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes 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...

CVE-2022-38667

HTTP applications servers based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used. The HTTP parser supports HTTP pipelining, but the asynchronous Connection layer is unaware of HTTP pipelining. Specifically, the Connection layer is unaware that it ha...

CVE-2020-7670

agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct...

Linux Distros Unpatched Vulnerability : CVE-2024-49768

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes defaults to 8192 long, follow...

MGASA-2025-0053 Updated python-waitress packages fix security vulnerabilities

Waitress has a request processing race condition in HTTP pipelining with an invalid first request. CVE-2024-49768 Waitress has a denial of service leading to high CPU usage/resource exhaustion. CVE-2024-49769...

Important: Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (python-waitress) security update

An update for python-waitress is now available for Red Hat OpenStack Platform 17.1 Wallaby. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

waitress: python-waitress: request processing race condition in HTTP pipelining with invalid first request

A flaw was found in the Waitress WSGI server for Python. A remote client can send a request that is exactly recvbytes, which defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default, Waitress won't read any more requests, and when th...

Important: python-waitress

Issue Overview: Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default we won't read any more...

waitress: python-waitress: request processing race condition in HTTP pipelining with invalid first request

A flaw was found in the Waitress WSGI server for Python. A remote client can send a request that is exactly recvbytes, which defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default, Waitress won't read any more requests, and when th...

waitress: python-waitress: request processing race condition in HTTP pipelining with invalid first request

A flaw was found in the Waitress WSGI server for Python. A remote client can send a request that is exactly recvbytes, which defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default, Waitress won't read any more requests, and when th...

waitress: python-waitress: request processing race condition in HTTP pipelining with invalid first request

A flaw was found in the Waitress WSGI server for Python. A remote client can send a request that is exactly recvbytes, which defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default, Waitress won't read any more requests, and when th...

Security update for python-waitress

This update for python-waitress fixes the following issues: CVE-2024-49768: Fixed request processing race condition in HTTP pipelining with invalid first request when lookahead is enabled bsc1232556 CVE-2024-49769: Fixed incorrect connection clean up leads to a busy-loop and resource exhaustion...

CVE-2024-49768

A flaw was found in the Waitress WSGI server for Python. A remote client can send a request that is exactly recvbytes, which defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default, Waitress won't read any more requests, and when th...

UBUNTU-CVE-2024-49768

Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes 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...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview waitress is a production-quality pure-Python WSGI server with very acceptable performance. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in HTTP pipelining when handling an invalid initial request. An attacker can exploit this...

GHSA-9298-4CF8-G4WJ Waitress has request processing race condition in HTTP pipelining with invalid first request

Impact A remote client may send a request that is exactly recvbytes 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 th...

CVE-2024-49768

CVE-2024-49768 (Waitress) : A race condition in HTTP pipelining with request lookahead can cause a mismanaged second request while the first is being processed. Waitress 3.0.1 fixes the race; as a workaround, disable channel_request_lookahead (default 0). Public advisories reference exposure in I...

CVE-2024-49768 Waitress has request processing race condition in HTTP pipelining with invalid first request

Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes 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...

CVE-2024-49768 Waitress has request processing race condition in HTTP pipelining with invalid first request

Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes 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...

CVE-2024-49768

Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes 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...