CVE Vulnerability

CVE-2021-36219

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/skalenetwork/sgxwallet/releases Release Notes Third Party Advisory
https://github.com/skalenetwork/sgxwallet/commit/4e9b5b7526db083177e81f8bafeaa4914d276a82 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:skale:sgxwallet:1.58.3:*:*:*:*:*:*:*
Information

Published : 2021-09-27 02:15

Updated : 2021-10-01 10:19

NVD link : CVE-2021-36219

Mitre link : CVE-2021-36219

Products Affected
No products.
CWE
CWE-824

Access of Uninitialized Pointer