Wireshark-bugs: [Wireshark-bugs] [Bug 3977] New: Wireshark SSL dissector does not support DHE; s
Date: Thu, 3 Sep 2009 01:59:13 -0700 (PDT)

           Summary: Wireshark SSL dissector does not support DHE; suggesting
                    more descriptive error message
           Product: Wireshark
           Version: SVN
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Minor
          Priority: Low
         Component: Wireshark
        AssignedTo: [email protected]
        ReportedBy: [email protected]

Build Information:
wireshark 1.2.1

Compiled with GTK+ 2.16.1, with GLib 2.20.1, with libpcap 1.0.0, with libz, without POSIX capabilities, without libpcre, without SMI, without
c-ares, without ADNS, without Lua, with GnuTLS 2.4.2, with Gcrypt 1.4.1,
Kerberos, without GeoIP, without PortAudio, without AirPcap.
NOTE: this build doesn't support the "matches" operator for Wireshark filter

Running on Linux 2.6.28-15-generic, with libpcap version 1.0.0, GnuTLS 2.4.2,
Gcrypt 1.4.1.

Built using gcc 4.3.3.

Wireshark's SSL dissector does not support DHE key exchange. The SSL debug log
will print the following:
==> ssl_decrypt_pre_master_secret key 17 different from KEX_RSA(16)

This is a confusing error message. To know what 'key 17' is, the user has to
look at the .h-file for the ssl dissector. Therefore, I propose the following

==> ssl_decrypt_pre_master_secret session uses DHE(17) key exchange, which is
impossible to decrypt

This change can be easily made in <a

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