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.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

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

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2022-01-14 17:15

Updated : 2022-01-21 20:40

NVD link : CVE-2022-21685

Mitre link : CVE-2022-21685

CVE.ORG link : CVE-2022-21685

JSON object : View

Products Affected

parity

frontier

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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