rustsec-2019-0027
Vulnerability from osv_rustsec
Published
2019-10-14 12:00
Modified
2023-06-13 13:10
Summary
Flaw in Scalar::check_overflow allows side-channel timing attack
Details

Versions of libsecp256k1 prior to 0.3.1 did not execute Scalar::check_overflow in constant time.

This allows an attacker to potentially leak information via a timing attack.

The flaw was corrected by modifying Scalar::check_overflow to execute in constant time.


{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "crypto-failure"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "libsecp256k1::Scalar::check_overflow"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "libsecp256k1",
        "purl": "pkg:cargo/libsecp256k1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.3.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2019-25003",
    "GHSA-hrjm-c879-pp86"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Versions of `libsecp256k1` prior to `0.3.1` did not execute\nScalar::check_overflow in constant time.\n\nThis allows an attacker to potentially leak information via a timing attack.\n\nThe flaw was corrected by modifying Scalar::check_overflow to execute in\nconstant time.",
  "id": "RUSTSEC-2019-0027",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2019-10-14T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/libsecp256k1"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2019-0027.html"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Flaw in Scalar::check_overflow allows side-channel timing attack"
}


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