UBUNTU-CVE-2019-16786

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Source
https://ubuntu.com/security/CVE-2019-16786
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16786.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-16786
Related
Published
2019-12-20T23:15:00Z
Modified
2024-10-15T14:07:01Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / waitress

Package

Name
waitress
Purl
pkg:deb/ubuntu/waitress?arch=src?distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8.9-2ubuntu1
0.8.10-1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:Pro:18.04:LTS / waitress

Package

Name
waitress
Purl
pkg:deb/ubuntu/waitress?arch=src?distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1-1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:20.04:LTS / waitress

Package

Name
waitress
Purl
pkg:deb/ubuntu/waitress?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.1-1

Affected versions

1.*

1.2.0~b2-2
1.3.1-4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.4.1-1",
            "binary_name": "python-waitress-doc"
        },
        {
            "binary_version": "1.4.1-1",
            "binary_name": "python3-waitress"
        }
    ]
}