CVEvulnerability

CVE-2021-36219

9.8 CRITICAL Published 2021-09-27 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-09-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-824

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.

Affected configurations

• skale sgxwallet 1.58.3

Related

Weakness · CWE (1)

  • CWE-824 Access of Uninitialized Pointer weakness

References