bugtraq - [CVE-2016-5000] XML External Entity (XXE) Vulnerability in Apache POI's XLSX2CSV Example

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Date: Fri, 22 Jul 2016 19:18:13 +0000 (UTC)
From: Tim Allison <tallison@...che.org>
To: "security@...che.org" <security@...che.org>,
  "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>,
  "bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>,
  "dev@....apache.org" <dev@....apache.org>,
  "user@....apache.org" <user@....apache.org>
Subject: [CVE-2016-5000] XML External Entity (XXE) Vulnerability in Apache
 POI's XLSX2CSV Example

CVE-2016-5000: XML External Entity (XXE) Vulnerability in Apache POI's XLSX2CSV Example 

Severity: Important 

Vendor: The Apache Software Foundation 

Versions Affected: POI 3.5-3.13 

Description: 

Apache POI's XLSX2CSV example uses Java's XML components to parse OpenXML files. Applications and users that use XLSX2CSV and accept such files from end-users are vulnerable to XML External Entity (XXE) attacks, which allow remote attackers to bypass security restrictions and read arbitrary files via a crafted OpenXML document that provides an XML external entity declaration in conjunction with an entity reference.

Mitigation: Upgrade to 3.14 or higher 

Credit: This issue was discovered by Mauro Gentile of Minded Security.