CVE-2023-33242

Published Aug 9, 2023

Last updated a year ago

Overview

Description: Crypto wallets implementing the Lindell17 TSS protocol might allow an attacker to extract the full ECDSA private key by exfiltrating a single bit in every signature attempt (256 in total) because of not adhering to the paper's security proof's assumption regarding handling aborts after a failed signature.
Source: disclosures@halborn.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 8.1
Impact score: 5.2
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-74

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:lindell17_project:lindell17:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "BCB206C8-258F-4DAD-AAF2-D38153F2C7A4"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References