CVE-2024-49769
Waitress DoS Lockup Vulnerability
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.
INFO
Published Date :
Oct. 29, 2024, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 9:41 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-49769.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-49769 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-49769 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2024/11/msg00012.html -
Initial Analysis by [email protected]
Nov. 07, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c No Types Assigned https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c Patch Changed Reference Type https://github.com/Pylons/waitress/issues/418 No Types Assigned https://github.com/Pylons/waitress/issues/418 Issue Tracking Changed Reference Type https://github.com/Pylons/waitress/pull/435 No Types Assigned https://github.com/Pylons/waitress/pull/435 Patch Changed Reference Type https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6 No Types Assigned https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6 Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:* versions up to (excluding) 3.0.1 -
CVE Received by [email protected]
Oct. 29, 2024
Action Type Old Value New Value Added 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. Added Reference GitHub, Inc. https://github.com/Pylons/waitress/security/advisories/GHSA-3f84-rpwh-47g6 [No types assigned] Added Reference GitHub, Inc. https://github.com/Pylons/waitress/issues/418 [No types assigned] Added Reference GitHub, Inc. https://github.com/Pylons/waitress/pull/435 [No types assigned] Added Reference GitHub, Inc. https://github.com/Pylons/waitress/commit/1ae4e894c9f76543bee06584001583fc6fa8c95c [No types assigned] Added CWE GitHub, Inc. CWE-772 Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-49769 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-49769
weaknesses.