CVE Vulnerability

CVE-2022-21685

Frontier is Substrate's Ethereum compatibility layer. Prior to commit number `8a93fdc6c9f4eb1d2f2a11b7ff1d12d70bf5a664`, a bug in Frontier's MODEXP precompile implementation can cause an integer underflow in certain conditions. This will cause a node crash for debug builds. For release builds (and production WebAssembly binaries), the impact is limited as it can only cause a normal EVM out-of-gas. Users who do not use MODEXP precompile in their runtime are not impacted. A patch is available in pull request #549.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/paritytech/frontier/security/advisories/GHSA-cjg2-2fjg-fph4 Patch Third Party Advisory
https://github.com/paritytech/frontier/pull/549 Patch Third Party Advisory
https://github.com/paritytech/frontier/commit/8a93fdc6c9f4eb1d2f2a11b7ff1d12d70bf5a664 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:parity:frontier:*:*:*:*:*:*:*:*
Information

Published : 2022-01-14 05:15

Updated : 2022-01-21 08:40

NVD link : CVE-2022-21685

Mitre link : CVE-2022-21685

Products Affected
No products.
CWE
CWE-191

Integer Underflow (Wrap or Wraparound)