CVE-2019-16789
CVSS V2 Medium 6.4
CVSS V3 High 8.2
Description
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.
Overview
- CVE ID
- CVE-2019-16789
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-26T17:15:13
- Last Modified Date
- 2022-09-23T18:58:35
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:* | 1 | OR | 1.4.0 | |
| cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 8.2
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 4.2
References
| Reference URL | Reference Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2020:0720 | Third Party Advisory |
| https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes | Release Notes Vendor Advisory |
| https://github.com/Pylons/waitress/commit/11d9e138125ad46e951027184b13242a3c1de017 | Patch Third Party Advisory |
| https://github.com/github/advisory-review/pull/14604 | Broken Link Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ | Mailing List Third Party Advisory |
| https://www.oracle.com/security-alerts/cpuapr2022.html | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-16789 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16789 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 17:00:11 | Added to TrackCVE | |||
| 2022-12-04 08:38:17 | 2019-12-26T17:15Z | 2019-12-26T17:15:13 | CVE Published Date | updated |
| 2022-12-04 08:38:17 | 2022-09-23T18:58:35 | CVE Modified Date | updated | |
| 2022-12-04 08:38:17 | Analyzed | Vulnerability Status | updated | |
| 2022-12-04 08:38:21 | References | updated |