CVE-2019-16792
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 1.4.1-1 |
| debian | bullseye | fixed | 1.4.1-1 |
| debian | forky | fixed | 1.4.1-1 |
| debian | sid | fixed | 1.4.1-1 |
| debian | trixie | fixed | 1.4.1-1 |
References
- 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://github.com/Pylons/waitress
- https://github.com/pypa/advisory-database/tree/main/vulns/waitress/PYSEC-2020-178.yaml
- https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.suse.com/security/cve/CVE-2019-16792.html
- https://github.com/advisories/GHSA-j7j6-7hfx-5522
- https://security-tracker.debian.org/tracker/CVE-2019-16792
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.