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CVE-2015-0291

Estado: ModificadaMedia (5)—

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

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)

Openssl — Openssl

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2015-0291",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-03-19T22:59:09.660",
  "references": [
    {
      "url": "http://marc.info/?l=bugtraq&m=143748090628601&w=2",
      "tags": [
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        "Third Party Advisory"
      ],
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    },
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    },
    {
      "url": "http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015",
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        "Third Party Advisory"
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      "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
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      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1202338",
      "tags": [
        "Issue Tracking"
      ],
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    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f5391068daee88d",
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    {
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      "source": "secalert@redhat.com"
    },
    {
      "url": "https://www.openssl.org/news/secadv_20150319.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=143748090628601&w=2",
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    },
    {
      "url": "http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html",
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      "url": "https://bto.bluecoat.com/security-advisory/sa92",
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1202338",
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    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f5391068daee88d",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10110",
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      "tags": [
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.openssl.org/news/secadv_20150319.txt",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation."
    },
    {
      "lang": "es",
      "value": "La implementación sigalgs en t1_lib.c en OpenSSL 1.0.2 anterior a 1.0.2a permite a atacantes remotos causar una denegación de servicio (referencia a puntero nulo y caída del demonio) mediante el uso de una extensión signature_algorithms inválida en el mensaje ClientHello durante una renegociación."
    }
  ],
  "lastModified": "2026-06-17T00:19:55.517",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD3E5C1B-EC63-4214-A0BD-0B8681CE6C8B"
            },
            {
              "criteria": "cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "18797BEE-417D-4959-9AAD-C5A7C051B524"
            },
            {
              "criteria": "cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6FAA3C31-BD9D-45A9-A502-837FECA6D479"
            },
            {
              "criteria": "cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6455A421-9956-4846-AC7C-3431E0D37D23"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\" rel=\"nofollow\">CWE-476: NULL Pointer Dereference</a>",
  "sourceIdentifier": "secalert@redhat.com"
}