XML External Entity – Beyond /etc/passwd (For Fun & Profit)
Summary
This article discusses XML External Entity (XXE) vulnerabilities, suggesting their potential resurgence in mainstream security awareness. It explores how these vulnerabilities can be exploited for various purposes, implying a need for defenders to be aware of them.
IFF Assessment
FOE
XXE vulnerabilities can be exploited by attackers to access sensitive information, perform denial-of-service attacks, or scan internal networks, posing a direct threat to defenders.
Defender Context
XXE vulnerabilities remain a relevant threat, allowing attackers to potentially read local files (like /etc/passwd) and perform server-side requests. Defenders should ensure that XML parsers are configured to disable external entity processing to mitigate this risk.