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From Tim Allison <talli...@apache.org>
Subject [CVE-2016-4434] Apache Tika XML External Entity vulnerability
Date Thu, 26 May 2016 15:55:35 GMT
CVE-2016-4434: Apache Tika XML External Entity vulnerability

Severity: Important


Vendor: 
The Apache Software Foundation

Versions Affected: 
Apache Tika 0.10 to 1.12

Description: 
Apache Tika parses XML within numerous file formats.  In some instances[1], the initialization
ofthe XML parser or the choice of handlers did not protect against XML External Entity (XXE)
vulnerabilities.  According to www.owasp.org [2]: "This attack may lead to the disclosure
of confidential data, denial of service, server side request forgery, port scanning from the
perspective of the machine where the parser is located, and other system impacts." 


Mitigation: 
Upgrade to Apache Tika 1.13.

Credit: 
This issue was discovered by Arthur Khashaev (https://khashaev.ru), Seulgi Kim, Mesut Timur,and
Microsoft Vulnerability Research.

[1] Spreadsheets in OOXML files and XMP in PDF and other file formats.
[2] https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Processing

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