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vulnerabilities
New DDRop Attack Breaks Intel TDX and AMD SEV-SNP Confidential Computing
Researchers disclosed DDRop, a hardware attack that exploits memory protection weaknesses in Intel Total Data eXchange (TDX) and AMD Secure Encrypted Virtualization Secure Nested Paging (SEV-SNP) by silently dropping memory writes, causing the processor to repeatedly read stale encrypted data. The attack requires prior software control and brief physical access to install a circuit.
Why it matters: Organizations relying on Intel TDX or AMD SEV-SNP for confidential computing isolation should assess whether their threat model includes attackers with existing software compromise and brief hardware access, as these protections may be circumvented.
- Source published
- First seen by Cybersecurity Tracker