Wireshark · Wireshark-commits: [Wireshark-commits] lts-1.12.1 fb514c2: Fix packet length handling.

[Wireshark code review <code-review-do-not-reply@xxxxxxxxxxxxx>]

URL: https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=fb514c22fd797bd63042093b8cca8118b66dca3e
Submitter: Balint Reczey (balint@xxxxxxxxxxxxxxx)
Changed: branch: lts-1.12.1
Repository: wireshark

Commits:

fb514c2 by Guy Harris (guy@xxxxxxxxxxxx):

    Fix packet length handling.
    
    Treat the packet length as unsigned - it shouldn't be negative in the
    file.  If it is, that'll probably cause the sscanf to fail, so we'll
    report the file as bad.
    
    Check it against WTAP_MAX_PACKET_SIZE to make sure we don't try to
    allocate a huge amount of memory, just as we do in other file readers.
    
    Use the now-validated packet size as the length in
    ws_buffer_assure_space(), so we are certain to have enough space, and
    don't allocate too much space.
    
    Merge the header and packet data parsing routines while we're at it.
    
    Bug: 12395
    Change-Id: I4bf4f62882cf046e3e4ceffe7ab2ff3b178cd612
    Reviewed-on: https://code.wireshark.org/review/15174
    Reviewed-by: Guy Harris <guy@xxxxxxxxxxxx>
    (cherry picked from commit f95b7960774e8d6e052edcb768cd030640c8e969)
    Reviewed-on: https://code.wireshark.org/review/16113
    Reviewed-by: Balint Reczey <balint@xxxxxxxxxxxxxxx>
    

Actions performed:

    from  5788a9f   Don't treat the packet length as unsigned.
    adds  fb514c2   Fix packet length handling.


Summary of changes:
 wiretap/cosine.c |   75 +++++++++++++++++++++---------------------------------
 1 file changed, 29 insertions(+), 46 deletions(-)