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CVE-2010-4211

Status: ModifiedLow (2.9)—

The PayPal app before 3.0.1 for iOS does not verify that the server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof a PayPal web server via an arbitrary certificate.

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)

Ebay — Paypal

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2010-4211",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.9,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 5.5,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2010-11-09T01:00:02.697",
  "references": [
    {
      "url": "http://itunes.apple.com/us/app/paypal/id283646709",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://news.cnet.com/8301-27080_3-20021730-245.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://online.wsj.com/article/SB10001424052748703506904575592782874885808.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://viaforensics.com/press-releases/viaforensics-uncovers-paypal-application-vulnerability.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://viaforensics.com/security/viaforensics-uncovers-significant-vulnerability-paypal-iphone.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/44657",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/2887",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/63002",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://itunes.apple.com/us/app/paypal/id283646709",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://news.cnet.com/8301-27080_3-20021730-245.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://online.wsj.com/article/SB10001424052748703506904575592782874885808.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://viaforensics.com/press-releases/viaforensics-uncovers-paypal-application-vulnerability.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://viaforensics.com/security/viaforensics-uncovers-significant-vulnerability-paypal-iphone.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/44657",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2010/2887",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/63002",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The PayPal app before 3.0.1 for iOS does not verify that the server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof a PayPal web server via an arbitrary certificate."
    },
    {
      "lang": "es",
      "value": "La aplicación de PayPal anterior a v3.0.1 de IOS no comprueba que el nombre del servidor coincide con el nombre de dominio del sujeto de un certificado X.509, que permite a los atacantes \"man-in-the-middle\"  falsificar un servidor web de PayPal a través de un certificado de su elección."
    }
  ],
  "lastModified": "2026-06-16T23:24:22.080",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ebay:paypal:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B5F87AC-4F63-4FEB-A926-DAC25C760F6F",
              "versionEndIncluding": "3.0"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:3.1:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "51D3BE2B-5A01-4AD4-A436-0056B50A535D"
            },
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:3.1.2:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9A20F171-79FE-43B9-8309-B18341639FA1"
            },
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:3.1.3:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "126EF22D-29BC-4366-97BC-B261311E6251"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}