CVE-2019-16785
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0.
Overview
- CVE ID
- CVE-2019-16785
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-20T23:15:11
- Last Modified Date
- 2022-09-23T18:58:00
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:agendaless:waitress:*:*:*:*:*:*:*:* | 1 | OR | 1.3.1 | |
| 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:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
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 | Vendor Advisory |
| https://github.com/Pylons/waitress/commit/8eba394ad75deaf9e5cd15b78a3d16b12e6b0eba | Patch Third Party Advisory |
| https://github.com/Pylons/waitress/security/advisories/GHSA-pg36-wpm5-g57p | Exploit 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-2019-16785 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16785 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 17:00:11 | Added to TrackCVE | |||
| 2022-12-04 08:30:10 | 2019-12-20T23:15Z | 2019-12-20T23:15:11 | CVE Published Date | updated |
| 2022-12-04 08:30:10 | 2022-09-23T18:58:00 | CVE Modified Date | updated | |
| 2022-12-04 08:30:10 | Analyzed | Vulnerability Status | updated | |
| 2022-12-04 08:30:13 | References | updated |