[Technical Errata Reported] RFC9112 (7633)

The following errata report has been submitted for RFC9112,
"HTTP/1.1".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid7633

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Type: Technical
Reported by: Amos Jeffries <squid3@treenet.co.nz>

Section: 2.2

Original Text
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   Although the line terminator for the start-line and fields is the
   sequence CRLF, a recipient MAY recognize a single LF as a line
   terminator and ignore any preceding CR.

Corrected Text
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   Although the line terminator for the start-line, fields, chunk
   and last-chunk is the sequence CRLF, a recipient MAY recognize
   a single LF as a line terminator and ignore any preceding CR.

Notes
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chunked encoding (section 6.3) uses CRLF for line/framing delimiters in the same manner as other HTTP message sections. But these lines are not listed as a possible sites of bare-LF line terminator. Which makes for an unnecessary parser exception and complicates possible request smuggling robustness between implementations.

Instructions:
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RFC9112 (draft-ietf-httpbis-messaging-19)
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Title               : HTTP/1.1
Publication Date    : June 2022
Author(s)           : R. Fielding, Ed., M. Nottingham, Ed., J. Reschke, Ed.
Category            : INTERNET STANDARD
Source              : HTTP
Area                : Applications and Real-Time
Stream              : IETF
Verifying Party     : IESG

Received on Wednesday, 6 September 2023 01:01:30 UTC