Wireshark-bugs: [Wireshark-bugs] [Bug 5344] New: wireshark tools do not detect and read some ERF

Date: Wed, 27 Oct 2010 15:30:01 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5344

           Summary: wireshark tools do not detect and read some ERF files
                    correctly
           Product: Wireshark
           Version: SVN
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: stephen@xxxxxxxxxx


Build Information:
wireshark 1.5.0 (SVN Rev 34646 from /trunk)

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 (64-bit) with GTK+ 2.22.0, with GLib 2.26.0, with libpcap 1.1.1, with
libz 1.2.3.4, with POSIX capabilities (Linux), without libpcre, with SMI 0.4.8,
with c-ares 1.7.3, with Lua 5.1, without Python, with GnuTLS 2.8.6, with Gcrypt
1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built Aug  3
2010 06:06:51), without AirPcap.

Running on Linux 2.6.35-22-generic, with libpcap version 1.1.1, with libz
1.2.3.4, GnuTLS 2.8.6, Gcrypt 1.4.5.

Built using gcc 4.4.5.

--
The wiretap heuristic for detecting for ERF files fails if the first record in
the file is an ERF_TYPE_PAD record. The PAD record is skipped, but its '0' time
stamp is subsequently used in the 'no time stamp deltas > 2 weeks' heuristic
which fails and the file is rejected.

Also erf_read() in wiretap fails to handle ERF_TYPE_PAD records with rlen != 16
correctly. This may cause garbage to be read and wireshark may exit. These
records are valid but rare.

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