CVE-2019-16792
HIGH EPSS 79.6%
Published Jan 22, 20206y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published Jan 22, 2020 6y ago
Last Modified Jun 17, 2026 2w ago
Description
Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
79.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-444
Affected Products 3
| Vendor | Product | Version | Range |
|---|---|---|---|
| agendaless | waitress | * | ≤1.3.1 |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | 1.10.0 | any |
| debian | debian_linux | 9.0 | any |
References 5
- docs.pylonsproject.org https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes
- github.com https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65
- github.com https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6
- lists.debian.org https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html
- oracle.com https://www.oracle.com/security-alerts/cpuapr2022.html
Remediation
- github.com https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65
- oracle.com https://www.oracle.com/security-alerts/cpuapr2022.html