CVE-2021-36219
Published
CVSS v3
9.8
CRITICAL
CVSS v2
7.5
HIGH
Affected
1
PROJECT
Description
An issue was discovered in SKALE sgxwallet 1.58.3. The provided input for ECALL 14 triggers a branch in trustedEcdsaSign that frees a non-initialized pointer from the stack. An attacker can chain multiple enclave calls to prepare a stack that contains a valid address. This address is then freed, resulting in compromised integrity of the enclave. This was resolved after v1.58.3 and not reproducible in sgxwallet v1.77.0.
sgxwallet is the first-ever opensource high-performance hardware secure crypto wallet that is based on Intel SGX technology. First opensource product on Intel SGX whitelist. Scales to 100,000+ transactions per second. Currently supports ETH and SKALE, and will support BTC in the future. Sgxwallet is under heavy development and use by SKALE network.
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