UBUNTU-CVE-2019-16789

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Source
https://ubuntu.com/security/CVE-2019-16789
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16789.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-16789
Related
Published
2019-12-26T17:15:00Z
Modified
2024-10-15T14:07:01Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
[none]
Details

In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation.

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"
        }
    ]
}