ghsa-q95h-vc86-hv77
Vulnerability from github
Published
2022-05-24 16:57
Modified
2023-09-25 19:35
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
wolfCrypt leaks cryptographic information via timing side channel
Details

wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or--enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.0.0"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "wolfcrypt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-13628"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-17T22:25:50Z",
    "nvd_published_at": "2019-10-03T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without `--enable-fpecc`, `--enable-sp`, or` --enable-sp-math`) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.",
  "id": "GHSA-q95h-vc86-hv77",
  "modified": "2023-09-25T19:35:50Z",
  "published": "2022-05-24T16:57:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13628"
    },
    {
      "type": "WEB",
      "url": "https://eprint.iacr.org/2011/232.pdf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wolfSSL/wolfcrypt-py"
    },
    {
      "type": "WEB",
      "url": "https://minerva.crocs.fi.muni.cz"
    },
    {
      "type": "WEB",
      "url": "https://tches.iacr.org/index.php/TCHES/article/view/7337"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2019/10/02/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wolfCrypt leaks cryptographic information via timing side channel"
}


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