CVE-2023-44378

MEDIUM EPSS 12.9%
Published Oct 9, 20232y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 9, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
12.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-191
CWE-697

Affected Products 1

VendorProductVersionRange
consensysgnark* <0.9.0

References 3

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

Remediation

  • github.com https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934f
    Patch
  • github.com https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjg
    MitigationPatchThird Party Advisory