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CVE-2019-16214

Status: ModifiedMedium (5.7)—

Libra Core before 2019-09-03 has an erroneous regular expression for inline comments, which makes it easier for attackers to interfere with code auditing by using a nonstandard line-break character for a comment. For example, a Move module author can enter the // sequence (which introduces a single-line comment), followed by very brief comment text, the \r character, and code that has security-critical functionality. In many popular environments, this code is displayed on a separate line, and thus a reader may infer that the code is executed. However, the code is NOT executed, because language/compiler/ir_to_bytecode/src/parser.rs allows the comment to continue after the \r character.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Libra — Libra Core

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2019-16214",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.1
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-09-11T04:15:11.887",
  "references": [
    {
      "url": "https://blog.openzeppelin.com/libra-vulnerability-release/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://blog.openzeppelin.com/libra-vulnerability-summary/",
      "tags": [
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        "Third Party Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/libra/libra/commit/7efb0221989f17fdf7f8486730898ed947a1e19e",
      "tags": [
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        "Third Party Advisory"
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      "source": "cve@mitre.org"
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    {
      "url": "https://blog.openzeppelin.com/libra-vulnerability-release/",
      "tags": [
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://blog.openzeppelin.com/libra-vulnerability-summary/",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/libra/libra/commit/7efb0221989f17fdf7f8486730898ed947a1e19e",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Libra Core before 2019-09-03 has an erroneous regular expression for inline comments, which makes it easier for attackers to interfere with code auditing by using a nonstandard line-break character for a comment. For example, a Move module author can enter the // sequence (which introduces a single-line comment), followed by very brief comment text, the \\r character, and code that has security-critical functionality. In many popular environments, this code is displayed on a separate line, and thus a reader may infer that the code is executed. However, the code is NOT executed, because language/compiler/ir_to_bytecode/src/parser.rs allows the comment to continue after the \\r character."
    },
    {
      "lang": "es",
      "value": "Libra Core antes del 03-09-2019, presenta una expresión regular errónea para comentarios en línea, lo que hace más fácil para que atacantes interfieran con la auditoria del código mediante el uso de un carácter de salto de línea no estándar para un comentario. Por ejemplo, un autor del módulo Move puede ingresar la secuencia // (que introduce un comentario de una sola línea), seguido por un texto de comentario muy breve, el carácter \\r y el código que posee una funcionalidad crítica para la seguridad. En muchos entornos populares, este código es desplegado en una línea separada y, por lo tanto, un lector puede inferir que el código está ejecutado. Sin embargo, el código NO se ejecuta, porque el archivo language/compiler/ir_to_bytecode/src/parser.rs permite que el comentario continúe después del carácter \\r."
    }
  ],
  "lastModified": "2026-06-17T02:21:54.570",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libra:libra_core:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A2E55F3B-1682-470D-83BA-9452A91FBF98",
              "versionEndExcluding": "2019-09-03"
            }
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          "operator": "OR"
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      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}