Bugtraq mailing list archives

Re: Gzip & segmentation faults


From: spd () GTC1 CPS UNIZAR ES (J.A. Gutierrez)
Date: Fri, 26 Dec 1997 17:21:39 +0100



Under NT, it just throws an exception.  Probably is exploitable if you
dinked with it enough.  Instruction well in the executable's range
references memory at 0x1.

MS-DOS gzip screws-up totally.


        With your altered.gz
        MD5 (altered.gz) = bd5fc9d6973a308f13dfe5de54d28e02

        HPUX 68k => loops forever
        HPUX B.10.20 => loops forever
        SunOS 4.1.x => segmentation fault
        Solaris 2.x => segmentation fault
        Solaris x86 2.x => segmentation fault
        MkLinux 2.0.30-osfmach3 PPC => segmentation fault
        Linux  2.0.30 #2 i586 => segmentation fault
        MacOS 8.0 68k => loops forever

        MacOS 8.0 PPC => invalid compressed data--format violated
        (I'd be even hapier if I knew why it doesn't crash...)


--
    J.A. Gutierrez                                   So be easy and free
                                            when you're drinking with me
                                      I'm a man you don't meet every day
 finger me for PGP                                          (the pogues)



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