Re: Possible syslogd DoS ?

From: Petr Baudis (paskyat_private)
Date: Thu Oct 04 2001 - 12:34:10 PDT

  • Next message: Brian McKinney: "RE: Possible syslogd DoS ?"

    > 	I could be missing something here but doesn't newsyslog solve this
    > problem by rotating logs based on size, date or both?
    ..snip..
    >      I haven't done any testing myself but it sounds like if newsyslog can
    > keep up before the disk is filled you shouldn't have a problem since
    > newsyslog will over write previously rotated log files.  This could be
    > really trivial to defeat but thought its worth a mention.
    well, then the attacker might just use this to rotate-out some, ehm, delicate
    informations ;-).
    
    -- 
    
    				Petr "Pasky" Baudis
    .                                                                       .
            n = ((n >>  1) & 0x55555555) | ((n <<  1) & 0xaaaaaaaa);
            n = ((n >>  2) & 0x33333333) | ((n <<  2) & 0xcccccccc);
            n = ((n >>  4) & 0x0f0f0f0f) | ((n <<  4) & 0xf0f0f0f0);
            n = ((n >>  8) & 0x00ff00ff) | ((n <<  8) & 0xff00ff00);
            n = ((n >> 16) & 0x0000ffff) | ((n << 16) & 0xffff0000);
                    -- C code which reverses the bits in a word.
    .                                                                       .
    My public PGP key is on: http://pasky.ji.cz/~pasky/pubkey.txt
    -----BEGIN GEEK CODE BLOCK-----
    Version: 3.12
    GCS d- s++:++ a--- C+++ UL++++$ P+ L+++ E--- W+ N !o K- w-- !O M-
    !V PS+ !PE Y+ PGP+>++ t+ 5 X(+) R++ tv- b+ DI(+) D+ G e-> h! r% y?
    ------END GEEK CODE BLOCK------
    



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