CVE-2019-17554: Improper Restriction of XML External Entity Reference in Apache Olingo
Summary
CVE-2019-17554: Improper Restriction of XML External Entity Reference in Apache Olingo. Affects org.apache.olingo:odata-client-core versions >= 4.0.0, < 4.7.0. Fixed in 4.7.0. How to fix ↓
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Background
Apache Olingo is an open-source Java library that implements the Open Data Protocol (OData) standard. It provides a framework for building OData services and clients. The library includes modules for both server-side and client-side functionality. This vulnerability affects versions 4.0.0 to 4.6.0 of the odata-client-core and odata-server-core packages.
Vulnerability Detail
The XML content type entity deserializer in Apache Olingo versions 4.0.0 to 4.6.0 does not properly restrict the resolution of external entities. An attacker can send a request with the content type "application/xml" to trigger the deserialization of entities, which can be exploited for XML External Entity (XXE) attacks. This vulnerability has a CVSS score of 5.5 (Medium severity).
How To Fix
Minimum fixed version
4.7.0
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by upgrading to a non-vulnerable version of the Apache Olingo library.
Conclusion
The Apache Olingo library versions 4.0.0 to 4.6.0 are vulnerable to an XML External Entity (XXE) attack. To mitigate this vulnerability, it is recommended to upgrade to version 4.7.0 or later of the affected packages. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
Apache Olingo is an open-source Java library that implements the Open Data Protocol (OData) standard. It provides a framework for building OData services and clients.
XML External Entity (XXE) attack is a type of attack where an attacker can exploit vulnerabilities in XML parsers to read arbitrary files or execute remote requests.
This vulnerability allows an attacker to perform XXE attacks, which can lead to information disclosure, denial of service, or remote code execution depending on the specific scenario.
Yes, upgrading to version 4.7.0 or later of the affected packages fixes this vulnerability.
No, there are no known workarounds for this vulnerability. It is recommended to apply the fix by upgrading to a non-vulnerable version of the Apache Olingo library.
References
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