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seebugRootSSV:1585
HistoryMar 30, 2007 - 12:00 a.m.

PHP Session.Save_Path() TMPDIR Open_Basedir限制绕过漏洞

2007-03-3000:00:00
Root
www.seebug.org
45

PHP是一款广泛使用的WEB开发脚本语言。

PHP session.save_path存在open_basedir绕过问题,远程攻击者可能利用此漏洞结合其他漏洞进行进一步攻击,如包含文件。

当提供空会话保存路径时,文件会话存储模块通过TMPDIR环境变量指定回调的路径,不幸的是回调发生在open_basedir检查之后,可导致安全检查被绕过。进行其他进一步攻击。

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目前没有详细解决方案提供:

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                                                &lt;?php
&nbsp;&nbsp;ini_set(&quot;session.save_path&quot;,&nbsp;&quot;/sessions/user2/&quot;);
&nbsp;&nbsp;putenv(&quot;TMPDIR=/sessions/user2/&quot;);
&nbsp;&nbsp;ini_set(&quot;session.save_path&quot;,&nbsp;&quot;&quot;);