FKIE_CVE-2016-3739

Vulnerability from fkie_nvd - Published: 2016-05-20 14:59 - Updated: 2025-04-12 10:46
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Summary
The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.
References
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2024/03/27/4
secalert@redhat.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
secalert@redhat.comhttp://www.securityfocus.com/bid/90726
secalert@redhat.comhttp://www.securitytracker.com/id/1035907
secalert@redhat.comhttp://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349
secalert@redhat.comhttps://curl.haxx.se/CVE-2016-3739.patchVendor Advisory
secalert@redhat.comhttps://curl.haxx.se/changes.html#7_49_0
secalert@redhat.comhttps://curl.haxx.se/docs/adv_20160518.htmlVendor Advisory
secalert@redhat.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
secalert@redhat.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
secalert@redhat.comhttps://security.gentoo.org/glsa/201701-47
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/03/27/4
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/90726
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1035907
af854a3a-2127-422b-91ae-364da2661108http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349
af854a3a-2127-422b-91ae-364da2661108https://curl.haxx.se/CVE-2016-3739.patchVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://curl.haxx.se/changes.html#7_49_0
af854a3a-2127-422b-91ae-364da2661108https://curl.haxx.se/docs/adv_20160518.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
af854a3a-2127-422b-91ae-364da2661108https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201701-47
Impacted products
Vendor Product Version
haxx curl 7.21.0
haxx curl 7.21.1
haxx curl 7.21.2
haxx curl 7.21.3
haxx curl 7.21.4
haxx curl 7.21.5
haxx curl 7.21.6
haxx curl 7.21.7
haxx curl 7.22.0
haxx curl 7.23.0
haxx curl 7.23.1
haxx curl 7.24.0
haxx curl 7.25.0
haxx curl 7.26.0
haxx curl 7.27.0
haxx curl 7.28.0
haxx curl 7.28.1
haxx curl 7.29.0
haxx curl 7.30.0
haxx curl 7.31.0
haxx curl 7.32.0
haxx curl 7.33.0
haxx curl 7.34.0
haxx curl 7.35.0
haxx curl 7.36.0
haxx curl 7.38.0
haxx curl 7.39.0
haxx curl 7.40.0
haxx curl 7.41.0
haxx curl 7.42.0
haxx curl 7.42.1
haxx curl 7.43.0
haxx curl 7.44.0
haxx curl 7.45.0
haxx curl 7.46.0
haxx curl 7.47.0
haxx curl 7.48.0
To clipboard 

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          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate."
    },
    {
      "lang": "es",
      "value": "Las funciones (1) mbed_connect_step1 en lib/vtls/mbedtls.c y (2) polarssl_connect_step1 en lib/vtls/polarssl.c en cURL y libcurl en versiones anteriores 7.49.0, cuando usan SSLv3 o hacen una conexi\u00f3n TSL a una URL que usa una direcci\u00f3n IP num\u00e9rica, permiten a atacantes remotos enga\u00f1ar a los servidores a trav\u00e9s de un certificado arbitrario v\u00e1lido."
    }
  ],
  "id": "CVE-2016-3739",
  "lastModified": "2025-04-12T10:46:40.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 4.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
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          "attackVector": "NETWORK",
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          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-05-20T14:59:05.450",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://www.openwall.com/lists/oss-security/2024/03/27/4"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.securityfocus.com/bid/90726"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.securitytracker.com/id/1035907"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.495349"
    },
    {
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      "tags": [
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      "url": "https://curl.haxx.se/CVE-2016-3739.patch"
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    {
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    {
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      "url": "https://security.gentoo.org/glsa/201701-47"
    },
    {
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    },
    {
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      "tags": [
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      "url": "https://curl.haxx.se/CVE-2016-3739.patch"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://curl.haxx.se/docs/adv_20160518.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201701-47"
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.