CVE-2019-16785
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-16785
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16785.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2019-16785
- Aliases
- Related
- Published
- 2019-12-20T23:15:11Z
- Modified
- 2024-09-18T03:03:15.645766Z
- 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 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
-
- https://access.redhat.com/errata/RHSA-2020:0720
- https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes
- https://github.com/Pylons/waitress/security/advisories/GHSA-pg36-wpm5-g57p
- https://lists.debian.org/debian-lts-announce/2022/05/msg00011.html
- https://github.com/Pylons/waitress/commit/8eba394ad75deaf9e5cd15b78a3d16b12e6b0eba
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDHR2DNKCNQ7YQXISJ45NT4IQDX3LJ7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYEOTGWJZVKPRXX2HBNVIYWCX73QYPM5/
- https://security-tracker.debian.org/tracker/CVE-2019-16785
Affected packages
Debian:11 / waitress
Package
- Name
- waitress
- Purl
- pkg:deb/debian/waitress?arch=source
Debian:12 / waitress
Package
- Name
- waitress
- Purl
- pkg:deb/debian/waitress?arch=source
Debian:13 / waitress
Package
- Name
- waitress
- Purl
- pkg:deb/debian/waitress?arch=source