FKIE_CVE-2021-1495

Vulnerability from fkie_nvd - Published: 2021-04-29 18:15 - Updated: 2024-11-21 05:44
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.
References
psirt@cisco.comhttps://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhcVendor Advisory
psirt@cisco.comhttps://www.debian.org/security/2023/dsa-5354
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhcVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5354
Impacted products
Vendor Product Version
cisco firepower_threat_defense *
cisco firepower_threat_defense *
cisco firepower_threat_defense *
cisco ios_xe *
snort snort *
cisco ios_xe *
cisco ios_xe *
cisco 1100-4g\/6g_integrated_services_router -
cisco 1101_integrated_services_router -
cisco 1109_integrated_services_router -
cisco 1111x_integrated_services_router -
cisco 111x_integrated_services_router -
cisco 1120_integrated_services_router -
cisco 1160_integrated_services_router -
cisco 3000_integrated_services_router -
cisco 4221_integrated_services_router -
cisco 4331_integrated_services_router -
cisco 4431_integrated_services_router -
cisco 4461_integrated_services_router -
cisco c8200-1n-4t -
cisco c8200l-1n-4t -
cisco catalyst_8300-1n1s-4t2x -
cisco catalyst_8300-1n1s-6t -
cisco catalyst_8300-2n2s-4t2x -
cisco catalyst_8300-2n2s-6t -
cisco catalyst_8500l -
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload."
    },
    {
      "lang": "es",
      "value": "M\u00faltiples productos de Cisco est\u00e1n afectados por una vulnerabilidad en el motor de detecci\u00f3n Snort que podr\u00eda permitir a un atacante remoto no autenticado omitir una pol\u00edtica de archivos configurada para HTTP.\u0026#xa0;La vulnerabilidad es debido a un manejo incorrecto de par\u00e1metros espec\u00edficos del encabezado HTTP.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de paquetes HTTP dise\u00f1ados por medio de un dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir una pol\u00edtica de archivos configurada para paquetes HTTP y entregar una carga \u00fatil maliciosa"
    }
  ],
  "id": "CVE-2021-1495",
  "lastModified": "2024-11-21T05:44:28.830",
  "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
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2021-04-29T18:15:09.430",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc"
    },
    {
      "source": "psirt@cisco.com",
      "url": "https://www.debian.org/security/2023/dsa-5354"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.debian.org/security/2023/dsa-5354"
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  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
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}


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  • 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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