Mercurial > dropbear
view libtomcrypt/coverity.sh @ 1790:42745af83b7d
Introduce extra delay before closing unauthenticated sessions
To make it harder for attackers, introduce a delay to keep an
unauthenticated session open a bit longer, thus blocking a connection
slot until after the delay.
Without this, while there is a limit on the amount of attempts an attacker
can make at the same time (MAX_UNAUTH_PER_IP), the time taken by dropbear to
handle one attempt is still short and thus for each of the allowed parallel
attempts many attempts can be chained one after the other. The attempt rate
is then:
"MAX_UNAUTH_PER_IP / <process time of one attempt>".
With the delay, this rate becomes:
"MAX_UNAUTH_PER_IP / UNAUTH_CLOSE_DELAY".
author | Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> |
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date | Wed, 15 Feb 2017 13:53:04 +0100 |
parents | 6dba84798cd5 |
children |
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#!/bin/bash if [ $# -lt 2 ] then echo "usage is: ${0##*/} <path to coverity scan> <extra compiler options>" echo "e.g. \"${0##*/} \"/usr/local/bin/coverity\" \"-DLTM_DESC -I/path/to/libtommath/\"\"" exit -1 fi PATH=$PATH:$1/bin make clean rm -r cov-int/ myCflags="" myCflags="$myCflags -O2 ${2}" myCflags="$myCflags -pipe -Werror -Wpointer-arith -Winit-self -Wextra -Wall -Wformat -Wformat-security" CFLAGS="$myCflags" cov-build --dir cov-int make -f makefile.unix $MAKE_OPTS IGNORE_SPEED=1 1>gcc_1.txt if [ $? -ne 0 ] then echo "make failed" exit -1 fi # zipup everything tar caf libtomcrypt.lzma cov-int mytoken=$(cat .coverity_token) mymail=$(cat .coverity_mail) myversion=$(git describe --dirty) curl -k --form project=libtomcrypt \ --form token=${mytoken} \ --form email=${mymail} \ --form file=@libtomcrypt.lzma \ --form version=\"${myversion}\" \ --form description="\"libtomcrypt version ${myversion}\"" \ https://scan.coverity.com/builds?project=libtom%2Flibtomcrypt