DNS Rebinding Attack: How Malicious Websites Exploit Private Networks
Summary: Palo Alto Networks Unit 42 details DNS rebinding, a technique in which an attacker's domain is first resolved to the attacker's own server and then rebound to an internal IP address, letting a malicious script reach private-network web consoles without violating the browser's same-origin policy. The writeup demonstrates the attack with the open-source Singularity platform against a simulated internal Hadoop interface, notes DNS rebinding vulnerabilities in Google Home, Sono WiFi Speaker and Roku devices, and cites at least one related CVE each year since 2015, rising notably after 2018.
What's compelling: Internal web consoles typically assume every visitor is authorized, so a single employee opening a phishing link can turn their browser into a tunnel that reads confidential data and kills running jobs on an internal Hadoop cluster. Palo Alto Networks reports its detector cuts the false discovery rate by 85.09% versus traditional IP filtering, which sets the bar for how precisely this traffic has to be caught.
Read the original at Unit 42 Palo Alto Networks ↗
- Topics
- Governance, Risk & Compliance
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