cve-2024-20293
Vulnerability from cvelistv5
Published
2024-05-22 16:55
Modified
2024-08-01 21:59
Severity
5.8 (Medium) - cvssV3_1 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Summary
A vulnerability in the activation of an access control list (ACL) on Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the protection that is offered by a configured ACL on an affected device. This vulnerability is due to a logic error that occurs when an ACL changes from inactive to active in the running configuration of an affected device. An attacker could exploit this vulnerability by sending traffic through the affected device that should be denied by the configured ACL. The reverse condition is also true—traffic that should be permitted could be denied by the configured ACL. A successful exploit could allow the attacker to bypass configured ACL protections on the affected device, allowing the attacker to access trusted networks that the device might be protecting. Note: This vulnerability applies to both IPv4 and IPv6 traffic as well as dual-stack ACL configurations in which both IPv4 and IPv6 ACLs are configured on an interface.
References
SourceURLTags
ykramarz@cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ogsnsg-aclbyp-3XB8q6jX
Impacted products
VendorProduct
CiscoCisco Adaptive Security Appliance (ASA) Software
CiscoCisco Firepower Threat Defense Software
Show details on NVD website

To clipboard 

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      "exploits": [
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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    "dateReserved": "2023-11-08T15:08:07.629Z",
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    "state": "PUBLISHED"
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-20293\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2024-05-22T17:16:13.167\",\"lastModified\":\"2024-05-22T18:59:20.240\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the activation of an access control list (ACL) on Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the protection that is offered by a configured ACL on an affected device. This vulnerability is due to a logic error that occurs when an ACL changes from inactive to active in the running configuration of an affected device. An attacker could exploit this vulnerability by sending traffic through the affected device that should be denied by the configured ACL. The reverse condition is also true\u2014traffic that should be permitted could be denied by the configured ACL. A successful exploit could allow the attacker to bypass configured ACL protections on the affected device, allowing the attacker to access trusted networks that the device might be protecting. Note: This vulnerability applies to both IPv4 and IPv6 traffic as well as dual-stack ACL configurations in which both IPv4 and IPv6 ACLs are configured on an interface.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en la activaci\u00f3n de una lista de control de acceso (ACL) en el software Cisco Adaptive Security Appliance (ASA) y el software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir que un atacante remoto no autenticado evite la protecci\u00f3n que ofrece una ACL configurada en un dispositivo afectado. Esta vulnerabilidad se debe a un error l\u00f3gico que ocurre cuando una ACL cambia de inactiva a activa en la configuraci\u00f3n en ejecuci\u00f3n de un dispositivo afectado. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando tr\u00e1fico a trav\u00e9s del dispositivo afectado que la ACL configurada deber\u00eda denegar. La condici\u00f3n inversa tambi\u00e9n es cierta: la ACL configurada podr\u00eda denegar el tr\u00e1fico que deber\u00eda permitirse. Un exploit exitoso podr\u00eda permitir al atacante eludir las protecciones ACL configuradas en el dispositivo afectado, permiti\u00e9ndole acceder a redes confiables que el dispositivo podr\u00eda estar protegiendo. Nota: Esta vulnerabilidad se aplica al tr\u00e1fico IPv4 e IPv6, as\u00ed como a configuraciones de ACL de doble pila en las que las ACL IPv4 e IPv6 est\u00e1n configuradas en una interfaz.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.8,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-436\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ogsnsg-aclbyp-3XB8q6jX\",\"source\":\"ykramarz@cisco.com\"}]}}"
  }
}


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