https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5181
Summary: Wireshark doesn't handle empty URIs in HTTP
Product: Wireshark
Version: 1.2.7
Platform: x86-64
OS/Version: Windows 7
Status: NEW
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: boaz.brickner@xxxxxxxxx
Created an attachment (id=5122)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=5122)
A packet example pcap file with the descripted problem
Build Information:
Version 1.2.7 (SVN Rev 32341)
Copyright 1998-2010 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Compiled with GTK+ 2.16.6, with GLib 2.22.4, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, without libpcre, without SMI, with
c-ares 1.7.0, with Lua 5.1, with GnuTLS 2.8.5, with Gcrypt 1.4.5, without
Kerberos, with GeoIP, with PortAudio V19-devel (built Mar 31 2010), with
AirPcap.
Running on 64-bit Windows 7, build 7600, with WinPcap version 4.1.2 (packet.dll
version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b (20091008),
GnuTLS 2.8.5, Gcrypt 1.4.5, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 30729
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
While testing Pcap.Net (http://pcapdot.net), I've found this bug in Wireshark:
According to RFC 2616 (HTTP/1.1), the first line of an HTTP request looks like
that:
Request-Line = Method SP Request-URI SP HTTP-Version CRLF
Note that there is a single space between the parts of the line.
Request-URI is defined in the same RFC like this:
Request-URI = "*" | absoluteURI | abs_path | authority
These options for Request-URI are not defined in this RFC. However, they are
defined in RFC 2396 (Uniform Resource Identifiers (URI): Generic Syntax).
Specifically:
authority = server | reg_name
server = [ [ userinfo "@" ] hostport ]
This means that server can be empty (since everything is optional) and so
authority can be empty and so Request-URI can be empty.
So a Request that looks like these:
GET HTTP/1.1\r\n
Should be parsed with empty URI (note that there are two spaces together).
However, Wireshark parses this as if the URI is HTTP/1.1.
In the attached file there is an HTTP layer with a DELETE request with an empty
URI and Wireshark takes the version part as the request URI.
Thank you,
Boaz.
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