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Secure link: fixed stack buffer overflow. When secure link checksum has length of 23 or 24 bytes, decoded base64 value could occupy 17 or 18 bytes which is more than 16 bytes previously allocated for it on stack. The buffer overflow does not have any security implications since only one local variable was corrupted and this variable was not used in this case. The fix is to increase buffer size up to 18 bytes. Useless buffer size initialization is removed as well.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 22 Aug 2017 21:22:59 +0300
parents 4a343228c55e
children f18db38a9826
line wrap: on
line source

#!/bin/sh

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


LC_ALL=C
export LC_ALL

. auto/options
. auto/init
. auto/sources

test -d $NGX_OBJS || mkdir -p $NGX_OBJS

echo > $NGX_AUTO_HEADERS_H
echo > $NGX_AUTOCONF_ERR

echo "#define NGX_CONFIGURE \"$NGX_CONFIGURE\"" > $NGX_AUTO_CONFIG_H


if [ $NGX_DEBUG = YES ]; then
    have=NGX_DEBUG . auto/have
fi


if test -z "$NGX_PLATFORM"; then
    echo "checking for OS"

    NGX_SYSTEM=`uname -s 2>/dev/null`
    NGX_RELEASE=`uname -r 2>/dev/null`
    NGX_MACHINE=`uname -m 2>/dev/null`

    echo " + $NGX_SYSTEM $NGX_RELEASE $NGX_MACHINE"

    NGX_PLATFORM="$NGX_SYSTEM:$NGX_RELEASE:$NGX_MACHINE";

    case "$NGX_SYSTEM" in
        MINGW32_* | MINGW64_* | MSYS_*)
            NGX_PLATFORM=win32
        ;;
    esac

else
    echo "building for $NGX_PLATFORM"
    NGX_SYSTEM=$NGX_PLATFORM
fi

. auto/cc/conf

if [ "$NGX_PLATFORM" != win32 ]; then
    . auto/headers
fi

. auto/os/conf

if [ "$NGX_PLATFORM" != win32 ]; then
    . auto/unix
fi

. auto/threads
. auto/modules
. auto/lib/conf

case ".$NGX_PREFIX" in
    .)
        NGX_PREFIX=${NGX_PREFIX:-/usr/local/nginx}
        have=NGX_PREFIX value="\"$NGX_PREFIX/\"" . auto/define
    ;;

    .!)
        NGX_PREFIX=
    ;;

    *)
        have=NGX_PREFIX value="\"$NGX_PREFIX/\"" . auto/define
    ;;
esac

if [ ".$NGX_CONF_PREFIX" != "." ]; then
    have=NGX_CONF_PREFIX value="\"$NGX_CONF_PREFIX/\"" . auto/define
fi

have=NGX_SBIN_PATH value="\"$NGX_SBIN_PATH\"" . auto/define
have=NGX_CONF_PATH value="\"$NGX_CONF_PATH\"" . auto/define
have=NGX_PID_PATH value="\"$NGX_PID_PATH\"" . auto/define
have=NGX_LOCK_PATH value="\"$NGX_LOCK_PATH\"" . auto/define
have=NGX_ERROR_LOG_PATH value="\"$NGX_ERROR_LOG_PATH\"" . auto/define

have=NGX_HTTP_LOG_PATH value="\"$NGX_HTTP_LOG_PATH\"" . auto/define
have=NGX_HTTP_CLIENT_TEMP_PATH value="\"$NGX_HTTP_CLIENT_TEMP_PATH\""
. auto/define
have=NGX_HTTP_PROXY_TEMP_PATH value="\"$NGX_HTTP_PROXY_TEMP_PATH\""
. auto/define
have=NGX_HTTP_FASTCGI_TEMP_PATH value="\"$NGX_HTTP_FASTCGI_TEMP_PATH\""
. auto/define
have=NGX_HTTP_UWSGI_TEMP_PATH value="\"$NGX_HTTP_UWSGI_TEMP_PATH\""
. auto/define
have=NGX_HTTP_SCGI_TEMP_PATH value="\"$NGX_HTTP_SCGI_TEMP_PATH\""
. auto/define

. auto/make
. auto/lib/make
. auto/install

# STUB
. auto/stubs

have=NGX_USER value="\"$NGX_USER\"" . auto/define
have=NGX_GROUP value="\"$NGX_GROUP\"" . auto/define

if [ ".$NGX_BUILD" != "." ]; then
    have=NGX_BUILD value="\"$NGX_BUILD\"" . auto/define
fi

. auto/summary