Wildfly – ‘WEB-INF’ / ‘META-INF’ Information Disclosure via Filter Restriction Bypass

• Exploit Database
• 57 阅读

• 作者： Tal Solomon of Palantir Security
  日期： 2016-03-20
• 类别：

  • webapps
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/39573/

• Exploit Title: Wildfly: WEB-INF and META-INF Information Disclosure via Filter Restriction Bypass
  Date: 09.02.16
  Exploit Author: Tal Solomon of Palantir Security
  Vendor Homepage: https://bugzilla.redhat.com/show_bug.cgi?id=1305937
  Software Link: http://wildfly.org/downloads/
  Version: This issue effects versions of Wildfly prior to 10.0.0.Final, including 9.0.2.Final, and 8.2.1.Final. 
  Tested on: Windows
  CVE : CVE-2016-0793
  
  An information disclosure of the content of restricted files WEB-INF and META-INF via filter mechanism was reported. Servlet filter restriction mechanism is enforced by two code checks: 
  
  if (path.startsWith("/META-INF") || path.startsWith("META-INF") || path.startsWith("/WEB-INF") || path.startsWith("WEB-INF")) {
  return false;
  }
  
  private boolean isForbiddenPath(String path) {
  return path.equalsIgnoreCase("/meta-inf/") || path.regionMatches(true, 0, "/web-inf/", 0, "/web-inf/".length());
  }
  
  which can be bypassed using lower case and adding meaningless character to path.
  
  Proof of Concept Video:
  https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39573.zip