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CVE-2015-5621

Estado: ModificadaAlta (7.5)—

The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet.

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)

Net-snmp — Net-snmp

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2015-5621",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2015-5621",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-12-04T17:20:51.406908Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-08-19T15:59:09.460",
  "references": [
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-09/msg00004.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1636.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://support.citrix.com/article/CTX209443",
      "source": "cve@mitre.org"
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    {
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    {
      "url": "http://www.openwall.com/lists/oss-security/2015/04/16/15",
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    {
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    {
      "url": "http://www.securityfocus.com/bid/76380",
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    {
      "url": "http://www.securitytracker.com/id/1033304",
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    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2711-1",
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1212408",
      "source": "cve@mitre.org"
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    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://sourceforge.net/p/net-snmp/bugs/2615/",
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    },
    {
      "url": "https://www.debian.org/security/2018/dsa-4154",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.exploit-db.com/exploits/45547/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2015-09/msg00004.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1636.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2015/04/13/1",
      "tags": [
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    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2015/04/16/15",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2015/07/31/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/76380",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1033304",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/USN-2711-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1212408",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://sourceforge.net/p/net-snmp/bugs/2615/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://www.debian.org/security/2018/dsa-4154",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://www.exploit-db.com/exploits/45547/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-19"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad en la función snmp_pdu_parse en snmp_api.c en net-snmp 5.7.2 y versiones anteriores, no elimina la variable varBind en un elemento netsnmp_variable_list cuando falla el análisis gramatical del SNMP PDU, lo que permite a atacantes remotos causar una denegación de servicio (caída) y posiblemente ejecutar código arbitrario a través de un paquete manipulado."
    }
  ],
  "lastModified": "2026-06-17T00:29:27.630",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B4A10A0A-6AE1-4771-B5D3-B9D7A1B78476",
              "versionEndIncluding": "5.7.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}