CVE-2019-16792: HTTP Request Smuggling: Content-Length Sent Twice in Waitress
First published: Wed Jan 22 2020(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Agendaless Waitress | <=1.3.1 | |
| Oracle Communications Cloud Native Core Network Function Cloud Native Environment | =1.10.0 | |
| Debian Debian Linux | =9.0 | |
| debian/waitress | 1.2.0~b2-2+deb10u1 1.4.4-1.1+deb11u1 2.1.2-2 |
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Reference Links
- https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6
- https://nvd.nist.gov/vuln/detail/CVE-2019-16792
- https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65
- https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes
- https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://github.com/advisories/GHSA-j7j6-7hfx-5522 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2019-16792
Frequently Asked Questions
What is CVE-2019-16792?
CVE-2019-16792 is a vulnerability that allows request smuggling by sending the Content-Length header twice in Waitress through version 1.3.1.
How severe is CVE-2019-16792?
CVE-2019-16792 has a severity score of 7.5, which is considered high.
How can I fix CVE-2019-16792?
To fix CVE-2019-16792, you need to update Waitress to version 1.4.0 or later.
Which software versions are affected by CVE-2019-16792?
Waitress versions up to and including 1.3.1 are affected by CVE-2019-16792.
Where can I find more information about CVE-2019-16792?
You can find more information about CVE-2019-16792 on the following sources: [GitHub Advisory](https://github.com/Pylons/waitress/security/advisories/GHSA-4ppp-gpcr-7qf6), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-16792), [GitHub Commit](https://github.com/Pylons/waitress/commit/575994cd42e83fd772a5f7ec98b2c56751bd3f65).
- collector/github-advisory
- alias/GHSA-j7j6-7hfx-5522
- alias/CVE-2019-16792
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- collector/security-tracker-debian
- collector/nvd-cve
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- vendor/agendaless
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- version/agendaless waitress/1.3.1
- vendor/oracle
- canonical/oracle communications cloud native core network function cloud native environment
- version/oracle communications cloud native core network function cloud native environment/1.10.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- package-manager/debian