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CVE-2023-42444

Status: ModifiedHigh (7.5)—

phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions `0.3.3+8.13.9` and `0.2.5+8.11.3`, the phonenumber parsing code may panic due to a panic-guarded out-of-bounds access on the phonenumber string. In a typical deployment of `rust-phonenumber`, this may get triggered by feeding a maliciously crafted phonenumber over the network, specifically the string `.;phone-context=`. Versions `0.3.3+8.13.9` and `0.2.5+8.11.3` contain a patch for this issue. There are no known workarounds.

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)

Whisperfish — Phonenumber

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2023-42444",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-42444",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-09-24T20:46:29.902328Z"
        }
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
      },
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        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "whisperfish",
          "product": "rust-phonenumber",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.2.5+8.11.3"
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            {
              "status": "affected",
              "version": ">= 0.3.0, < 0.3.3+8.3.19"
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  "published": "2023-09-19T15:15:56.660",
  "references": [
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      "url": "https://github.com/whisperfish/rust-phonenumber/commit/2dd44be94539c051b4dee55d1d9d349bd7bedde6",
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      "tags": [
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      "tags": [
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-248"
        },
        {
          "lang": "en",
          "value": "CWE-392"
        },
        {
          "lang": "en",
          "value": "CWE-1284"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions `0.3.3+8.13.9` and `0.2.5+8.11.3`, the phonenumber parsing code may panic due to a panic-guarded out-of-bounds access on the phonenumber string. In a typical deployment of `rust-phonenumber`, this may get triggered by feeding a maliciously crafted phonenumber over the network, specifically the string `.;phone-context=`. Versions `0.3.3+8.13.9` and `0.2.5+8.11.3` contain a patch for this issue. There are no known workarounds."
    },
    {
      "lang": "es",
      "value": "Phonenumber es una librería para analizar, formatear y validar números de teléfono internacionales. Antes de las versiones `0.3.3+8.13.9` y `0.2.5+8.11.3`, el código parseado de phonenumber podía entrar en pánico debido a un acceso fuera de los límites protegido contra el pánico en la cadena phonenumber. En una implementación típica de `rust-phonenumber`, esto puede desencadenarse al introducir un phonenumber creado con fines malintencionados a través de la red, específicamente la cadena `.;phone-context=`. Las versiones `0.3.3+8.13.9` y `0.2.5+8.11.3` contienen un parche para este problema. No se conocen workarounds."
    }
  ],
  "lastModified": "2026-06-17T06:23:50.550",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:whisperfish:phonenumber:*:*:*:*:*:rust:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "0.2.5\\+8.11.3"
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  "sourceIdentifier": "security-advisories@github.com"
}