| Name | CVE-2019-16786 |
| Description | Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests sent with: "Transfer-Encoding: gzip, chunked" would incorrectly get ignored, and the request would use a Content-Length header instead to determine the body size of the HTTP message. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. This issue is fixed in Waitress 1.4.0. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3000-1 |
| Debian Bugs | 947306 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| waitress (PTS) | bullseye | 1.4.4-1.1+deb11u1 | fixed |
| bullseye (security) | 1.4.4-1.1+deb11u2 | fixed | |
| bookworm | 2.1.2-2 | fixed | |
| trixie | 3.0.1-1 | fixed | |
| sid | 3.0.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| waitress | source | stretch | 1.0.1-1+deb9u1 | DLA-3000-1 | ||
| waitress | source | buster | 1.2.0~b2-2+deb10u1 | |||
| waitress | source | (unstable) | 1.4.1-1 | 947306 |
[jessie] - waitress <no-dsa> (Minor issue)
https://github.com/Pylons/waitress/security/advisories/GHSA-g2xc-35jw-c63p
https://github.com/Pylons/waitress/commit/f11093a6b3240fc26830b6111e826128af7771c3