CVE-2019-16789
Waitress HTTP Request Smuggling Vulnerability
Description
In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation.
INFO
Published Date :
Dec. 26, 2019, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 3:05 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.2
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2019-16789
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2019-16789.
| URL | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2020:0720 | Third Party Advisory |
| https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes | Release Notes Vendor Advisory |
| https://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017 | Patch Third Party Advisory |
| https://github.com/github/advisory-review/pull/14604 | Broken Link Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ | |
| https://www.oracle.com/security-alerts/cpuapr2022.html | Patch Third Party Advisory |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-16789 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-16789 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ -
Modified Analysis by [email protected]
Sep. 23, 2022
Action Type Old Value New Value Changed Reference Type https://access.redhat.com/errata/RHSA-2020:0720 No Types Assigned https://access.redhat.com/errata/RHSA-2020:0720 Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ Mailing List, Third Party Advisory Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 13, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html [No Types Assigned] -
CVE Modified by [email protected]
Apr. 20, 2022
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 11, 2020
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2020:0720 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 26, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ [No Types Assigned] -
CVE Modified by [email protected]
Feb. 25, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 08, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Changed Reference Type https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes No Types Assigned https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes Release Notes, Vendor Advisory Changed Reference Type https://github.com/github/advisory-review/pull/14604 No Types Assigned https://github.com/github/advisory-review/pull/14604 Broken Link, Third Party Advisory Changed Reference Type https://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017 No Types Assigned https://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017 Patch, Third Party Advisory Added CWE NIST CWE-444 Added CPE Configuration OR *cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:* versions up to (including) 1.4.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-16789 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-2019-16789
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.24 }} -0.10%
score
0.64084
percentile