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Perry Young
Partner, Attorney at Jensen Young & Butler, PLLC
Perry Young is an experienced network and security specialist with over 20 years of experience in IT and networks, having worked on global projects for service providers, high-tech vendors and large scale enterprises. He has held leadership positions at prominent institutions such as Citigroup and Standard Chartered Bank. Young's expertise includes cyber resilience, cyber hygiene, network capacity management, security design and network architecture, among others. He has obtained several certifications such as AWS Certified Practitioner and Juniper Networks JNCIP-SEC. Young is also active in the tech community as a Juniper Ambassador and Ingenious Champion of the Juniper Networks Champions Program.
Highlights
🚨KeyTrap: Worst DNSSEC Vulnerability Ever Discovered🚨
A critical new vulnerability named KeyTrap has exposed significant weaknesses in DNSSEC, one of the core protocols that ensures the security of the Internet. Researchers from the ATHENE cybersecurity center discovered that a single maliciously crafted DNS request could paralyze DNS resolvers for up to 16 hours😱- enabling a comprehensive Denial of Service (DoS) attack.
How does KeyTrap work? 🔑 Key-tag Collisions: KeyTrap exploits the fact that DNSSEC allows multiple keys to share the same tag. By crafting malicious DNS zones with numerous colliding keys, attackers can force a resolver to perform unnecessary cryptographic operations.
🔒 Multiple Signatures: The attack also takes advantage of multiple signatures that DNS resolvers are required to validate, combining with the key collisions to overwhelm the resolver's processing power.
Impact This attack affects all major DNSSEC-validating resolvers, including those from Google, Cloudflare, and Bind9. With just a few DNS requests, an attacker can stall these resolvers, preventing access to critical services like web browsing, email, and TLS certificates. This has led experts to call KeyTrap “the most devastating DNS attack ever discovered".
What’s being done? Major DNS vendors have released patches to mitigate the effects of KeyTrap, limiting the number of cryptographic operations per request. However, the flaw lies in the DNSSEC standard itself, meaning complete resolution will require updates to the protocol to avoid this kind of attack in the future.
🔧 For now, DNS providers must patch their systems ASAP and monitor their networks closely for exploitation.
➡️ Read more about this threat and how it's being mitigated here:
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Akamai on CVE-2023-50387 and CVE-2023-50868https://lnkd.in/gEnzJCca
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DNS Exploit KeyTrap Posed Major Internet Threat | Akamai https://lnkd.in/gkrbrKbN
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Cloudflare on DNSSEC Vulnerabilities https://lnkd.in/gVjKTHXQ
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Remediating new DNSSEC resource exhaustion vulnerabilities https://lnkd.in/gVjKTHXQ
Let's stay vigilant and proactive in securing the Internet’s infrastructure! 💻 #Cybersecurity #DNSSEC #KeyTrap #InfoSec #Cloudflare #Google #ISC
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