CVEvulnerability

CVE-2023-44378

5.5 MEDIUM Published 2023-10-09 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-10-09
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-191, CWE-697

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.

Affected configurations

• consensys gnark (< 0.9.0)

Related

Weakness · CWE (2)

  • CWE-191 Integer Underflow (Wrap or Wraparound) weakness
  • CWE-697 Incorrect Comparison weakness

References