FKIE_CVE-2024-20495

Vulnerability from fkie_nvd - Published: 2024-10-23 18:15 - Updated: 2025-08-15 16:40
Summary
A vulnerability in the Remote Access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper validation of client key data after the TLS session is established. An attacker could exploit this vulnerability by sending a crafted key value to an affected system over the secure TLS session. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Impacted products
Vendor Product Version
cisco adaptive_security_appliance_software 9.8.4.12
cisco adaptive_security_appliance_software 9.8.4.15
cisco adaptive_security_appliance_software 9.8.4.17
cisco adaptive_security_appliance_software 9.8.4.20
cisco adaptive_security_appliance_software 9.8.4.22
cisco adaptive_security_appliance_software 9.8.4.25
cisco adaptive_security_appliance_software 9.8.4.26
cisco adaptive_security_appliance_software 9.8.4.29
cisco adaptive_security_appliance_software 9.8.4.32
cisco adaptive_security_appliance_software 9.8.4.33
cisco adaptive_security_appliance_software 9.8.4.34
cisco adaptive_security_appliance_software 9.8.4.35
cisco adaptive_security_appliance_software 9.8.4.39
cisco adaptive_security_appliance_software 9.8.4.40
cisco adaptive_security_appliance_software 9.8.4.41
cisco adaptive_security_appliance_software 9.8.4.43
cisco adaptive_security_appliance_software 9.8.4.44
cisco adaptive_security_appliance_software 9.8.4.45
cisco adaptive_security_appliance_software 9.8.4.46
cisco adaptive_security_appliance_software 9.8.4.48
cisco adaptive_security_appliance_software 9.12.3
cisco adaptive_security_appliance_software 9.12.3.2
cisco adaptive_security_appliance_software 9.12.3.7
cisco adaptive_security_appliance_software 9.12.3.9
cisco adaptive_security_appliance_software 9.12.3.12
cisco adaptive_security_appliance_software 9.12.4
cisco adaptive_security_appliance_software 9.12.4.2
cisco adaptive_security_appliance_software 9.12.4.4
cisco adaptive_security_appliance_software 9.12.4.7
cisco adaptive_security_appliance_software 9.12.4.8
cisco adaptive_security_appliance_software 9.12.4.10
cisco adaptive_security_appliance_software 9.12.4.13
cisco adaptive_security_appliance_software 9.12.4.18
cisco adaptive_security_appliance_software 9.12.4.24
cisco adaptive_security_appliance_software 9.12.4.26
cisco adaptive_security_appliance_software 9.12.4.29
cisco adaptive_security_appliance_software 9.12.4.30
cisco adaptive_security_appliance_software 9.12.4.35
cisco adaptive_security_appliance_software 9.12.4.37
cisco adaptive_security_appliance_software 9.12.4.38
cisco adaptive_security_appliance_software 9.12.4.39
cisco adaptive_security_appliance_software 9.12.4.40
cisco adaptive_security_appliance_software 9.12.4.41
cisco adaptive_security_appliance_software 9.12.4.47
cisco adaptive_security_appliance_software 9.12.4.48
cisco adaptive_security_appliance_software 9.12.4.50
cisco adaptive_security_appliance_software 9.12.4.52
cisco adaptive_security_appliance_software 9.12.4.54
cisco adaptive_security_appliance_software 9.12.4.55
cisco adaptive_security_appliance_software 9.12.4.56
cisco adaptive_security_appliance_software 9.12.4.58
cisco adaptive_security_appliance_software 9.12.4.62
cisco adaptive_security_appliance_software 9.12.4.65
cisco adaptive_security_appliance_software 9.12.4.67
cisco adaptive_security_appliance_software 9.14.1
cisco adaptive_security_appliance_software 9.14.1.6
cisco adaptive_security_appliance_software 9.14.1.10
cisco adaptive_security_appliance_software 9.14.1.15
cisco adaptive_security_appliance_software 9.14.1.19
cisco adaptive_security_appliance_software 9.14.1.30
cisco adaptive_security_appliance_software 9.14.2
cisco adaptive_security_appliance_software 9.14.2.4
cisco adaptive_security_appliance_software 9.14.2.8
cisco adaptive_security_appliance_software 9.14.2.13
cisco adaptive_security_appliance_software 9.14.2.15
cisco adaptive_security_appliance_software 9.14.3
cisco adaptive_security_appliance_software 9.14.3.1
cisco adaptive_security_appliance_software 9.14.3.9
cisco adaptive_security_appliance_software 9.14.3.11
cisco adaptive_security_appliance_software 9.14.3.13
cisco adaptive_security_appliance_software 9.14.3.15
cisco adaptive_security_appliance_software 9.14.3.18
cisco adaptive_security_appliance_software 9.14.4
cisco adaptive_security_appliance_software 9.14.4.6
cisco adaptive_security_appliance_software 9.14.4.7
cisco adaptive_security_appliance_software 9.14.4.12
cisco adaptive_security_appliance_software 9.14.4.13
cisco adaptive_security_appliance_software 9.14.4.14
cisco adaptive_security_appliance_software 9.14.4.15
cisco adaptive_security_appliance_software 9.14.4.17
cisco adaptive_security_appliance_software 9.14.4.22
cisco adaptive_security_appliance_software 9.14.4.23
cisco adaptive_security_appliance_software 9.14.4.24
cisco adaptive_security_appliance_software 9.15.1
cisco adaptive_security_appliance_software 9.15.1.1
cisco adaptive_security_appliance_software 9.15.1.7
cisco adaptive_security_appliance_software 9.15.1.10
cisco adaptive_security_appliance_software 9.15.1.15
cisco adaptive_security_appliance_software 9.15.1.16
cisco adaptive_security_appliance_software 9.15.1.17
cisco adaptive_security_appliance_software 9.15.1.21
cisco adaptive_security_appliance_software 9.16.1
cisco adaptive_security_appliance_software 9.16.1.28
cisco adaptive_security_appliance_software 9.16.2
cisco adaptive_security_appliance_software 9.16.2.3
cisco adaptive_security_appliance_software 9.16.2.7
cisco adaptive_security_appliance_software 9.16.2.11
cisco adaptive_security_appliance_software 9.16.2.13
cisco adaptive_security_appliance_software 9.16.2.14
cisco adaptive_security_appliance_software 9.16.3
cisco adaptive_security_appliance_software 9.16.3.3
cisco adaptive_security_appliance_software 9.16.3.14
cisco adaptive_security_appliance_software 9.16.3.15
cisco adaptive_security_appliance_software 9.16.3.19
cisco adaptive_security_appliance_software 9.16.3.23
cisco adaptive_security_appliance_software 9.16.4
cisco adaptive_security_appliance_software 9.16.4.9
cisco adaptive_security_appliance_software 9.16.4.14
cisco adaptive_security_appliance_software 9.16.4.18
cisco adaptive_security_appliance_software 9.16.4.19
cisco adaptive_security_appliance_software 9.16.4.27
cisco adaptive_security_appliance_software 9.16.4.38
cisco adaptive_security_appliance_software 9.16.4.39
cisco adaptive_security_appliance_software 9.16.4.42
cisco adaptive_security_appliance_software 9.16.4.48
cisco adaptive_security_appliance_software 9.16.4.55
cisco adaptive_security_appliance_software 9.16.4.57
cisco adaptive_security_appliance_software 9.16.4.61
cisco adaptive_security_appliance_software 9.16.4.62
cisco adaptive_security_appliance_software 9.17.1
cisco adaptive_security_appliance_software 9.17.1.7
cisco adaptive_security_appliance_software 9.17.1.9
cisco adaptive_security_appliance_software 9.17.1.10
cisco adaptive_security_appliance_software 9.17.1.11
cisco adaptive_security_appliance_software 9.17.1.13
cisco adaptive_security_appliance_software 9.17.1.15
cisco adaptive_security_appliance_software 9.17.1.20
cisco adaptive_security_appliance_software 9.17.1.30
cisco adaptive_security_appliance_software 9.17.1.33
cisco adaptive_security_appliance_software 9.17.1.39
cisco firepower_threat_defense 6.2.3.16
cisco firepower_threat_defense 6.2.3.17
cisco firepower_threat_defense 6.2.3.18
cisco firepower_threat_defense 6.4.0.8
cisco firepower_threat_defense 6.4.0.9
cisco firepower_threat_defense 6.4.0.10
cisco firepower_threat_defense 6.4.0.11
cisco firepower_threat_defense 6.4.0.12
cisco firepower_threat_defense 6.4.0.13
cisco firepower_threat_defense 6.4.0.14
cisco firepower_threat_defense 6.4.0.15
cisco firepower_threat_defense 6.4.0.16
cisco firepower_threat_defense 6.4.0.17
cisco firepower_threat_defense 6.4.0.18
cisco firepower_threat_defense 6.6.0
cisco firepower_threat_defense 6.6.0.1
cisco firepower_threat_defense 6.6.1
cisco firepower_threat_defense 6.6.3
cisco firepower_threat_defense 6.6.4
cisco firepower_threat_defense 6.6.5
cisco firepower_threat_defense 6.6.5.1
cisco firepower_threat_defense 6.6.5.2
cisco firepower_threat_defense 6.6.7
cisco firepower_threat_defense 6.6.7.1
cisco firepower_threat_defense 6.6.7.2
cisco firepower_threat_defense 6.7.0
cisco firepower_threat_defense 6.7.0.1
cisco firepower_threat_defense 6.7.0.2
cisco firepower_threat_defense 6.7.0.3
cisco firepower_threat_defense 7.0.0
cisco firepower_threat_defense 7.0.0.1
cisco firepower_threat_defense 7.0.1
cisco firepower_threat_defense 7.0.1.1
cisco firepower_threat_defense 7.0.2
cisco firepower_threat_defense 7.0.2.1
cisco firepower_threat_defense 7.0.3
cisco firepower_threat_defense 7.0.4
cisco firepower_threat_defense 7.0.5
cisco firepower_threat_defense 7.0.6
cisco firepower_threat_defense 7.0.6.1
cisco firepower_threat_defense 7.0.6.2
cisco firepower_threat_defense 7.1.0
cisco firepower_threat_defense 7.1.0.1
cisco firepower_threat_defense 7.1.0.2
cisco firepower_threat_defense 7.1.0.3

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          "negate": false,
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Remote Access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper validation of client key data after the TLS session is established. An attacker could exploit this vulnerability by sending a crafted key value to an affected system over the secure TLS session. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funci\u00f3n de VPN de acceso remoto del software Cisco Adaptive Security Appliance (ASA) y del software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir que un atacante remoto no autenticado haga que el dispositivo se recargue inesperadamente, lo que da como resultado una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una validaci\u00f3n incorrecta de los datos de la clave del cliente despu\u00e9s de que se establece la sesi\u00f3n TLS. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando un valor de clave creado a un sistema afectado a trav\u00e9s de la sesi\u00f3n TLS segura. Una explotaci\u00f3n exitosa podr\u00eda permitir que el atacante haga que el dispositivo se recargue, lo que da como resultado una condici\u00f3n de denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2024-20495",
  "lastModified": "2025-08-15T16:40:50.227",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-10-23T18:15:13.007",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-vpn-cZf8gT"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

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


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