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CVE-2023-28095

Estado: ModificadaAlta (7.5)—

OpenSIPS es una implementación de un servidor del Protocolo de Inicio de Sesión (SIP). Las versiones anteriores a la 3.1.7 y la 3.2.4 presentan un posible problema en `msg_translator.c:2628` que podría provocar una caída del servidor. Este problema se encontró al realizar pruebas de fuzzing sobre la función `build_res_buf_from_sip_req`, pero no pudo reproducirse contra una instancia en ejecución de OpenSIPS. Este problema no pudo explotarse contra una instancia en ejecución de OpenSIPS, ya que no se encontró ninguna función pública que hiciera uso de este código vulnerable.

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Incluso en el caso de una explotación mediante vectores desconocidos, es muy poco probable que este problema provoque algo distinto de una denegación de servicio. Este problema se ha corregido en las versiones 3.1.7 y 3.2.4.

Traducción automática del texto original de NVD (en inglés).

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Opensips — Opensips

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-28095",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-28095",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-25T14:30:44.054305Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "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
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "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"
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      }
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  "affected": [
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "OpenSIPS",
          "product": "opensips",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.1.7"
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            {
              "status": "affected",
              "version": ">= 3.2.0, < 3.2.4"
            }
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  ],
  "published": "2023-03-15T22:15:10.440",
  "references": [
    {
      "url": "https://github.com/OpenSIPS/opensips/commit/9cf3dd3398719dd91207495f76d7726701c5145c",
      "tags": [
        "Patch",
        "Third Party Advisory"
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    },
    {
      "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-7pf3-24qg-8v9h",
      "tags": [
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      "source": "security-advisories@github.com"
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    {
      "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf",
      "tags": [
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      "url": "https://github.com/OpenSIPS/opensips/commit/9cf3dd3398719dd91207495f76d7726701c5145c",
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.1.7 and 3.2.4 have a potential issue in `msg_translator.c:2628` which might lead to a server crash. This issue was found while fuzzing the function `build_res_buf_from_sip_req` but could not be reproduced against a running instance of OpenSIPS. This issue could not be exploited against a running instance of OpenSIPS since no public function was found to make use of this vulnerable code. Even in the case of exploitation through unknown vectors, it is highly unlikely that this issue would lead to anything other than Denial of Service. This issue has been fixed in versions 3.1.7 and 3.2.4."
    }
  ],
  "lastModified": "2026-06-17T05:46:51.587",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "3.1.7"
            },
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}