CVE-2013-6440: OpenSAML-Java XML External Entity (XXE) Vulnerability
Summary
CVE-2013-6440: Exposure of Sensitive Information to an Unauthorized Actor in OpenSAML. Affects org.opensaml:opensaml versions < 2.6.1. Fixed in 2.6.1. How to fix ↓
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Background
OpenSAML is a Java library that provides a set of tools for implementing the Security Assertion Markup Language (SAML) standard. It is commonly used in identity and access management systems to enable secure single sign-on (SSO) authentication. The vulnerability affects versions of OpenSAML-Java prior to 2.6.1.
Vulnerability Detail
The vulnerability in OpenSAML-Java arises from the improper configuration of certain components, including the BasicParserPool, StaticBasicParserPool, XML Decrypter, and SAML Decrypter. These components set the expandEntityReferences property to true, which enables XML external entity (XXE) attacks. An attacker can exploit this vulnerability by crafting a malicious XML DOCTYPE declaration, leading to the exposure of sensitive information to unauthorized actors.
How To Fix
Minimum fixed version
2.6.1
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to update to the fixed version of OpenSAML-Java to mitigate the risk of XXE attacks.
Conclusion
The OpenSAML-Java XML External Entity (XXE) vulnerability exposes sensitive information to unauthorized actors. To mitigate this risk, it is crucial to update to OpenSAML-Java version 2.6.1 or later. For further assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
OpenSAML-Java is a Java library used for implementing the SAML standard in identity and access management systems.
An XML external entity (XXE) attack is a type of vulnerability where an attacker can exploit the processing of XML entities to access sensitive information or execute arbitrary code.
This vulnerability allows remote attackers to conduct XXE attacks, potentially leading to the exposure of sensitive information stored in the affected OpenSAML-Java components.
No, only versions prior to 2.6.1 are affected. It is recommended to upgrade to the fixed version to mitigate the vulnerability.
No, the only effective solution is to update to OpenSAML-Java version 2.6.1 or later.
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