CVE-2019-16786
published 2019-12-20CVE-2019-16786: 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…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
2.54%
83.4th percentile
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.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| agendaless | waitress | < 1.3.1 | 1.3.1 |
| debian | debian_linux | — | — |
| debian | waitress | < waitress 1.4.1-1 (bookworm) | waitress 1.4.1-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | — | — |
| pylons | waitress | <= 1.3.1 | — |
| pylons | waitress | >= 0 < 1.4.1-1 | 1.4.1-1 |
| pylons | waitress | >= 0 < 1.4.1-1 | 1.4.1-1 |
| pylons | waitress | >= 0 < 1.4.1-1 | 1.4.1-1 |
| pylons | waitress | >= 0 < 1.4.1-1 | 1.4.1-1 |
| pylons | waitress | >= 0 < 1.4.0 | 1.4.0 |
| redhat | openstack | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv7.5HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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OSV
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
osv·2019-12-20
CVE-2019-16786 [MEDIUM] HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
### Impact
Waitress 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.
### Patches
This issue is fixed
OSV
CVE-2019-16786: Waitress through version 1
osv·2019-12-20·CVSS 7.5
CVE-2019-16786 [HIGH] CVE-2019-16786: Waitress through version 1
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.
GHSA
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
ghsa·2019-12-20
CVE-2019-16786 [MEDIUM] CWE-444 HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
### Impact
Waitress 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.
### Patches
This issue is fixed
Red Hat
waitress: HTTP request smuggling through invalid Transfer-Encoding
vendor_redhat·2019-12-20·CVSS 7.1
CVE-2019-16786 [HIGH] CWE-444 waitress: HTTP request smuggling through invalid Transfer-Encoding
waitress: HTTP request smuggling through invalid Transfer-Encoding
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.
A
Debian
CVE-2019-16786: waitress - Waitress through version 1.3.1 would parse the Transfer-Encoding header and only...
vendor_debian·2019·CVSS 7.1
CVE-2019-16786 [HIGH] CVE-2019-16786: waitress - Waitress through version 1.3.1 would parse the Transfer-Encoding header and only...
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.
Scope: local
bookworm: resolved (fixed in 1.4.1-1)
bullseye: resolved
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-16786 waitress: HTTP request smuggling through invalid Transfer-Encoding
bugzilla·2020-01-15·CVSS 7.1
CVE-2019-16786 [HIGH] CVE-2019-16786 waitress: HTTP request smuggling through invalid Transfer-Encoding
CVE-2019-16786 waitress: HTTP request smuggling through invalid Transfer-Encoding
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 Wai
Bugzilla
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [fedora-all]
bugzilla·2020-01-15·CVSS 7.1
CVE-2019-16786 [HIGH] CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [fedora-all]
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue a
Bugzilla
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [openstack-rdo]
bugzilla·2020-01-15·CVSS 7.1
CVE-2019-16786 [HIGH] CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [openstack-rdo]
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [openstack-rdo]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of openstack-rdo.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Bugzilla
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [epel-all]
bugzilla·2020-01-15·CVSS 7.1
CVE-2019-16786 [HIGH] CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [epel-all]
CVE-2019-16786 python-waitress: waitress: HTTP request smuggling through invalid Transfer-Encoding [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affec
https://access.redhat.com/errata/RHSA-2020:0720https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixeshttps://github.com/Pylons/waitress/commit/f11093a6b3240fc26830b6111e826128af7771c3https://github.com/Pylons/waitress/security/advisories/GHSA-g2xc-35jw-c63phttps://lists.debian.org/debian-lts-announce/2022/05/msg00011.htmlhttps://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.htmlhttps://access.redhat.com/errata/RHSA-2020:0720https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixeshttps://github.com/Pylons/waitress/commit/f11093a6b3240fc26830b6111e826128af7771c3https://github.com/Pylons/waitress/security/advisories/GHSA-g2xc-35jw-c63phttps://lists.debian.org/debian-lts-announce/2022/05/msg00011.htmlhttps://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
2019-12-20
Published