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controller: Handle UnicodeDecodeError from webob decoding invalid URLs
webob will try to utf-8 decode all %-encoded bytes in URL-parameters, but will
not handle Unicode erors ... and neither did Kallithea. Visiting a URL like
http://localhost:5000/?%AD would thus give an unhandled exception showing
"Internal Server Error" to the user, and logging the full traceback and:
WebApp Error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xad in position 0: invalid start byte
This has been seen a lot recently from attackers probing for a php
vulnerability
https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/ .
Now handle these exceptions more nicely and reject with "400 Bad Request".
webob will try to utf-8 decode all %-encoded bytes in URL-parameters, but will
not handle Unicode erors ... and neither did Kallithea. Visiting a URL like
http://localhost:5000/?%AD would thus give an unhandled exception showing
"Internal Server Error" to the user, and logging the full traceback and:
WebApp Error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xad in position 0: invalid start byte
This has been seen a lot recently from attackers probing for a php
vulnerability
https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/ .
Now handle these exceptions more nicely and reject with "400 Bad Request".
99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 2c3d30095d5e 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 2c3d30095d5e 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 e285bb7abb28 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 99ad9d0af1a3 e285bb7abb28 | #!/bin/bash
###########################################
#### THIS IS AN ARCH LINUX RC.D SCRIPT ####
###########################################
. /etc/rc.conf
. /etc/rc.d/functions
DAEMON=kallithea
APP_HOMEDIR="/srv"
APP_PATH="$APP_HOMEDIR/$DAEMON"
CONF_NAME="production.ini"
LOG_FILE="/var/log/$DAEMON.log"
PID_FILE="/run/daemons/$DAEMON"
APPL=/usr/bin/gearbox
RUN_AS="*****"
ARGS="serve --daemon \
--user=$RUN_AS \
--group=$RUN_AS \
--pid-file=$PID_FILE \
--log-file=$LOG_FILE \
-c $APP_PATH/$CONF_NAME"
[ -r /etc/conf.d/$DAEMON ] && . /etc/conf.d/$DAEMON
if [[ -r $PID_FILE ]]; then
read -r PID < "$PID_FILE"
if [[ $PID && ! -d /proc/$PID ]]; then
unset PID
rm_daemon $DAEMON
fi
fi
case "$1" in
start)
stat_busy "Starting $DAEMON"
export HOME=$APP_PATH
[ -z "$PID" ] && $APPL $ARGS &>/dev/null
if [ $? = 0 ]; then
add_daemon $DAEMON
stat_done
else
stat_fail
exit 1
fi
;;
stop)
stat_busy "Stopping $DAEMON"
[ -n "$PID" ] && kill $PID &>/dev/null
if [ $? = 0 ]; then
rm_daemon $DAEMON
stat_done
else
stat_fail
exit 1
fi
;;
restart)
$0 stop
sleep 1
$0 start
;;
status)
stat_busy "Checking $name status";
ck_status $name
;;
*)
echo "usage: $0 {start|stop|restart|status}"
esac
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