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Re: Irix buffer overflow in /bin/df


From: spd () GTC1 CPS UNIZAR ES (J.A. Gutierrez)
Date: Sat, 24 May 1997 21:44:45 +0200


The version of 'df' which comes with Irix 6.2, whilst having the buffer
overflow problem, is not vulnerable to this exploit as it is compiled as
a 64bit N32 object

        this is true only for the IRIX64 version of Irix 6.2


The temporary fix: chmod u-s /bin/df


        Another fix: replace irix 6.2 mips-2 binary with the mips-3
        binary from an IRIX64 box


The exploit code included has been tested on the following:

R3000 Indigo (Irix 5.3)
R4400 Indy (Irix 5.3)
R5000 O2 (Irix 6.3)


        R4400 Challenge L (IRIX64 Irix 6.2) -> doesn't works
        $ file /sbin/df
        /sbin/df:       ELF N32 MSB mips-3 dynamic executable MIPS - version 1)

        R4600 Indy, Irix 6.2 -> works
        R4400 Indigo 2, Irix 6.2 -> works


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