GHSA-56WV-2WR9-3H9R高危已审查

Improper Verification of Cryptographic Signature in fastecdsa

OSV 1.4.0 · github-reviewed · 修改于 2025-02-13 02:33

发布时间

2021-10-13 00:30

GitHub 审查时间

2021-10-09 06:28

NVD 发布时间

2020-06-03 05:15

源文件

advisories/github-reviewed/2021/10/GHSA-56wv-2wr9-3h9r/GHSA-56wv-2wr9-3h9r.json

公告说明

An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s<sup>-1</sup>, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.

受影响的软件包

PyPI

fastecdsa

ECOSYSTEM

引入02.1.2

标识信息

别名 / CVE

CVE-2020-12607

CWE

CWE-347

软件生态

PyPI

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS_V4

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

原始 OSV JSON

{
  "id": "GHSA-56wv-2wr9-3h9r",
  "aliases": [
    "CVE-2020-12607"
  ],
  "details": "An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s<sup>-1</sup>, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.",
  "summary": "Improper Verification of Cryptographic Signature in fastecdsa",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.2"
            }
          ]
        }
      ],
      "package": {
        "name": "fastecdsa",
        "ecosystem": "PyPI"
      }
    }
  ],
  "modified": "2025-02-12T18:33:20Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
    },
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
    }
  ],
  "published": "2021-10-12T16:30:37Z",
  "references": [
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12607",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/AntonKueltz/fastecdsa/issues/52",
      "type": "WEB"
    },
    {
      "url": "https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c",
      "type": "WEB"
    },
    {
      "url": "https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de",
      "type": "WEB"
    },
    {
      "url": "https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1",
      "type": "WEB"
    },
    {
      "url": "https://github.com/AntonKueltz/fastecdsa",
      "type": "PACKAGE"
    },
    {
      "url": "https://github.com/advisories/GHSA-56wv-2wr9-3h9r",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/fastecdsa/PYSEC-2020-42.yaml",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2020-06-02T21:15:00Z",
    "github_reviewed_at": "2021-10-08T22:28:23Z"
  }
}