FKIE_CVE-2015-8023

Vulnerability from fkie_nvd - Published: 2015-11-18 16:59 - Updated: 2025-04-12 10:46
Severity ?
Summary
The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html
cve@mitre.orghttp://www.debian.org/security/2015/dsa-3398
cve@mitre.orghttp://www.securityfocus.com/bid/84947
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2811-1
cve@mitre.orghttps://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2015/dsa-3398
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/84947
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2811-1
af854a3a-2127-422b-91ae-364da2661108https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html
Impacted products
Vendor Product Version
canonical ubuntu_linux 14.04
canonical ubuntu_linux 15.04
canonical ubuntu_linux 15.10
strongswan strongswan 4.2.12
strongswan strongswan 4.2.13
strongswan strongswan 4.2.14
strongswan strongswan 4.2.15
strongswan strongswan 4.2.16
strongswan strongswan 4.3.0
strongswan strongswan 4.3.1
strongswan strongswan 4.3.2
strongswan strongswan 4.3.3
strongswan strongswan 4.3.4
strongswan strongswan 4.3.5
strongswan strongswan 4.3.6
strongswan strongswan 4.3.7
strongswan strongswan 4.4.0
strongswan strongswan 4.4.1
strongswan strongswan 4.5.0
strongswan strongswan 4.5.1
strongswan strongswan 4.5.2
strongswan strongswan 4.5.3
strongswan strongswan 4.6.0
strongswan strongswan 4.6.1
strongswan strongswan 4.6.2
strongswan strongswan 4.6.3
strongswan strongswan 4.6.4
strongswan strongswan 5.0.0
strongswan strongswan 5.0.1
strongswan strongswan 5.0.2
strongswan strongswan 5.0.3
strongswan strongswan 5.0.4
strongswan strongswan 5.1.0
strongswan strongswan 5.1.1
strongswan strongswan 5.1.2
strongswan strongswan 5.1.3
strongswan strongswan 5.2.0
strongswan strongswan 5.2.1
strongswan strongswan 5.2.2
strongswan strongswan 5.2.3
strongswan strongswan 5.3.0
strongswan strongswan 5.3.1
strongswan strongswan 5.3.2
strongswan strongswan 5.3.3
To clipboard 

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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message."
    },
    {
      "lang": "es",
      "value": "La implementaci\u00f3n del servidor del protocolo EAP-MSCHAPv2 en el plugin eap-mschapv2 en strongSwan 4.2.12 hasta la versi\u00f3n 5.x en versiones anteriores a 5.3.4 no valida adecuadamente el estado local, lo que permite a atacantes remotos eludir la autenticaci\u00f3n a trav\u00e9s de un mensaje Success vac\u00edo en respuesta a un mensaje Challenge inicial."
    }
  ],
  "id": "CVE-2015-8023",
  "lastModified": "2025-04-12T10:46:40.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2015-11-18T16:59:07.587",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2015/dsa-3398"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.securityfocus.com/bid/84947"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ubuntu.com/usn/USN-2811-1"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html"
    },
    {
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      "url": "http://www.debian.org/security/2015/dsa-3398"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/84947"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ubuntu.com/usn/USN-2811-1"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.