fkie_cve-2013-5018
Vulnerability from fkie_nvd
Published
2013-08-28 23:55
Modified
2025-04-11 00:51
Severity ?
Summary
The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
cve@mitre.orghttp://secunia.com/advisories/54315Vendor Advisory
cve@mitre.orghttp://secunia.com/advisories/54524Vendor Advisory
cve@mitre.orghttp://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.htmlVendor Advisory
cve@mitre.orghttp://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.htmlVendor Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/61564
cve@mitre.orghttps://lists.strongswan.org/pipermail/users/2013-July/009540.htmlExploit
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/54315Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/54524Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/61564
af854a3a-2127-422b-91ae-364da2661108https://lists.strongswan.org/pipermail/users/2013-July/009540.htmlExploit
Impacted products



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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n  is_asn1 en strongSwan v4.1.11 hasta v5.0.4 no valida correctamente el valor de retorno de la funci\u00f3n asn1_length, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria) a trav\u00e9s de (1) nombre de usuario XAuth, (2) identidad EAP, o (3) la codificaci\u00f3n PEM de un fichero que comienza con los caracteres \"0x04, 0x30, o 0x31\" seguidos por un valor de tama\u00f1o ASN.1 que dispara un desbordamiento de enteros."
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  ],
  "id": "CVE-2013-5018",
  "lastModified": "2025-04-11T00:51:21.963",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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  },
  "published": "2013-08-28T23:55:10.650",
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      "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html"
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    {
      "source": "cve@mitre.org",
      "url": "http://www.securityfocus.com/bid/61564"
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      "tags": [
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-119"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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