CVE-2023-44378

gnark is a zk-SNARK library that offers a high-level API to design circuits. Prior to version 0.9.0, for some in-circuit values, it is possible to construct two valid decomposition to bits. In addition to the canonical decomposition of `a`, for small values there exists a second decomposition for `a+r` (where `r` is the modulus the values are being reduced by). The second decomposition was possible due to overflowing the field where the values are defined. Upgrading to version 0.9.0 should fix the issue without needing to change the calls to value comparison methods.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934f	Patch
https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjg	Mitigation Patch Third Party Advisory
https://github.com/zkopru-network/zkopru/issues/116	Not Applicable

Configurations

Configuration 1 (hide)

cpe:2.3:a:consensys:gnark:*:*:*:*:*:*:*:*

History

13 Oct 2023, 18:43

Type	Values Removed	Values Added
First Time		Consensys gnark Consensys
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:a:consensys:gnark::::::::
References	~~(MISC) https://github.com/zkopru-network/zkopru/issues/116 -~~	(MISC) https://github.com/zkopru-network/zkopru/issues/116 - Not Applicable
References	~~(MISC) https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjg -~~	(MISC) https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjg - Mitigation, Patch, Third Party Advisory
References	~~(MISC) https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934f -~~	(MISC) https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934f - Patch

09 Oct 2023, 14:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2023-10-09 14:15

Updated : 2023-12-10 15:14

NVD link : CVE-2023-44378

Mitre link : CVE-2023-44378

CVE.ORG link : CVE-2023-44378

JSON object : View

Products Affected

consensys

gnark

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

CWE-697

Incorrect Comparison

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