https://issues.apache.org/bugzilla/show_bug.cgi?id=51557
Bug #: 51557
Summary: Newline during a http header field name obscures next
value
Product: Tomcat 7
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Connectors
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
Created attachment 27314
--> https://issues.apache.org/bugzilla/attachment.cgi?id=27314
Patch to stop CR & LF in the header.
InternalInputBuffer allows newlines in http header field names. As an example:
Foo: Val1
Bar: Val2
MISS
Hup: Val3
This will lead to a field name of 'MISSHup' and not 'Hup'.
Digging into the specs, I think this goes back to RFC 822 which states:
field-name = 1*<any CHAR, excluding CTLs, SPACE, and ":">
and
CTL = <any ASCII control ; ( 0- 37, 0.- 31.)
character and DEL> ; ( 177, 127.)
I think this is saying that field-name should not contain CR or LF.
I've attached a patch that stops CR & LF. Two improvements I could see, if
there's agreement with this as a bug, are adding a unit test to
TestInternalInputBuffer and changing the code so it disallows space and any
other ctrl character in the field name.
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