CVE-2022-24761
Summary
| CVE | CVE-2022-24761 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2022-03-17 13:15:00 UTC |
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| Updated | 2022-09-23 18:57:00 UTC |
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| Description | Waitress is a Web Server Gateway Interface server for Python 2 and 3. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python's `int()` to parse strings into integers, leading to `+10` to be parsed as `10`, or `0x01` to be parsed as `1`, where as the standard specifies that the string should contain only digits or hex digits; and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This vulnerability has been patched in Waitress 2.1.1. A workaround is available. When deploying a proxy in front of waitress, turning on any and all functionality to make sure that the request matches the RFC7230 standard. Certain proxy servers may not have this functionality though and users are encouraged to upgrade to the latest version of waitress instead. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|
| [SECURITY] [DLA 3000-1] waitress security update |
MLIST |
lists.debian.org |
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| Release v2.1.1: Merge pull request from GHSA-4f7p-27jc-3c36 · Pylons/waitress · GitHub |
MISC |
github.com |
|
| Merge pull request from GHSA-4f7p-27jc-3c36 · Pylons/waitress@9e0b8c8 · GitHub |
MISC |
github.com |
|
| Debian -- Security Information -- DSA-5138-1 waitress |
DEBIAN |
www.debian.org |
|
| Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in waitress · Advisory · Pylons/waitress · GitHub |
CONFIRM |
github.com |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 179276 Debian Security Update for waitress (DLA 3000-1)
- 179293 Debian Security Update for waitress (DSA 5138-1)
- 183960 Debian Security Update for waitress (CVE-2022-24761)
- 198729 Ubuntu Security Notification for Waitress Vulnerability (USN-5364-1)
- 240202 Red Hat Update for OpenStack Platform 16.2 (RHSA-2022:1253)
- 240203 Red Hat Update for OpenStack Platform 16.1 (RHSA-2022:1254)
- 240204 Red Hat Update for OpenStack Platform 13.0 (RHSA-2022:1264)
- 354473 Amazon Linux Security Advisory for python-waitress : ALAS2022-2022-235
- 354558 Amazon Linux Security Advisory for python-waitress : ALAS-2022-235
- 671899 EulerOS Security Update for python-waitress (EulerOS-SA-2022-1948)
- 752723 SUSE Enterprise Linux Security Update for python-waitress (SUSE-SU-2022:3731-1)
