Re: Possible syslogd DoS ?

[Petr Baudis <pasky () pasky ji cz>]

>       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------