Cyber Risks · PortSwigger Research

Burp Suite now reports blind XXE injection

Summary: PortSwigger's latest release of Burp Suite Professional updates Burp Scanner to detect blind XML external entity (XXE) injection, where an application processes an injected external entity but gives no indication in its response. The scanner now defines an external entity referencing a URL on an external domain, and when the vulnerable application fetches that URL it interacts with the Burp Collaborator server, typically a DNS lookup followed by an HTTP request, which Burp polls to confirm the interaction and report the issue.

What's compelling: PortSwigger states that, due to a lack of widespread testing for blind XXE in the past, these vulnerabilities appear relatively common in application functions where client-submitted XML is processed server-side, so the absence of a visible response has not meant the absence of a vulnerability.

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Topics
Vulnerabilities & Patching
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