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.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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Configuration 4 (hide)
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Configuration 5 (hide)
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History
21 Nov 2024, 04:31
Type | Values Removed | Values Added |
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References | () https://access.redhat.com/errata/RHSA-2020:0720 - Third Party Advisory | |
References | () https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes - Vendor Advisory | |
References | () https://github.com/Pylons/waitress/commit/8eba394ad75deaf9e5cd15b78a3d16b12e6b0eba - Patch, Third Party Advisory | |
References | () https://github.com/Pylons/waitress/security/advisories/GHSA-pg36-wpm5-g57p - Exploit, Third Party Advisory | |
References | () https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html - Mailing List, Third Party Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/ - | |
References | () https://www.oracle.com/security-alerts/cpuapr2022.html - Patch, Third Party Advisory | |
CVSS |
v2 : v3 : |
v2 : 5.0
v3 : 7.1 |
07 Nov 2023, 03:05
Type | Values Removed | Values Added |
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Information
Published : 2019-12-20 23:15
Updated : 2024-11-21 04:31
NVD link : CVE-2019-16785
Mitre link : CVE-2019-16785
CVE.ORG link : CVE-2019-16785
JSON object : View
Products Affected
redhat
- openstack
oracle
- communications_cloud_native_core_network_function_cloud_native_environment
debian
- debian_linux
agendaless
- waitress
fedoraproject
- fedora
CWE
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')