Mercurial > dropbear
view libtomcrypt/filter.pl @ 1861:2b3a8026a6ce
Add re-exec for server
This allows ASLR to re-randomize the address
space for every connection, preventing some
vulnerabilities from being exploitable by
repeated probing.
Overhead (memory and time) is yet to be confirmed.
At present this is only enabled on Linux. Other BSD platforms
with fexecve() would probably also work though have not been tested.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sun, 30 Jan 2022 10:14:56 +0800 |
parents | 0cbe8f6dbf9e |
children |
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#!/usr/bin/perl # we want to filter every between START_INS and END_INS out and then insert crap from another file (this is fun) $dst = shift; $ins = shift; open(SRC,"<$dst"); open(INS,"<$ins"); open(TMP,">tmp.delme"); $l = 0; while (<SRC>) { if ($_ =~ /START_INS/) { print TMP $_; $l = 1; while (<INS>) { print TMP $_; } close INS; } elsif ($_ =~ /END_INS/) { print TMP $_; $l = 0; } elsif ($l == 0) { print TMP $_; } } close TMP; close SRC;