CVE-2023-20071 (GCVE-0-2023-20071)

Vulnerability from cvelistv5 – Published: 2023-11-01 17:07 – Updated: 2024-08-02 08:57
VLAI?
Summary
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.
CWE
  • CWE-1039 - Automated Recognition Mechanism with Inadequate Detection or Handling of Adversarial Input Perturbations
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Firepower Threat Defense Software Affected: 6.2.3
Affected: 6.2.3.1
Affected: 6.2.3.2
Affected: 6.2.3.3
Affected: 6.2.3.4
Affected: 6.2.3.5
Affected: 6.2.3.6
Affected: 6.2.3.7
Affected: 6.2.3.8
Affected: 6.2.3.10
Affected: 6.2.3.11
Affected: 6.2.3.9
Affected: 6.2.3.12
Affected: 6.2.3.13
Affected: 6.2.3.14
Affected: 6.2.3.15
Affected: 6.2.3.16
Affected: 6.2.3.17
Affected: 6.2.3.18
Affected: 6.6.0
Affected: 6.6.0.1
Affected: 6.6.1
Affected: 6.6.3
Affected: 6.6.4
Affected: 6.6.5
Affected: 6.6.5.1
Affected: 6.6.5.2
Affected: 6.6.7
Affected: 6.6.7.1
Affected: 6.4.0
Affected: 6.4.0.1
Affected: 6.4.0.3
Affected: 6.4.0.2
Affected: 6.4.0.4
Affected: 6.4.0.5
Affected: 6.4.0.6
Affected: 6.4.0.7
Affected: 6.4.0.8
Affected: 6.4.0.9
Affected: 6.4.0.10
Affected: 6.4.0.11
Affected: 6.4.0.12
Affected: 6.4.0.13
Affected: 6.4.0.14
Affected: 6.4.0.15
Affected: 6.4.0.16
Affected: 6.7.0
Affected: 6.7.0.1
Affected: 6.7.0.2
Affected: 6.7.0.3
Affected: 7.0.0
Affected: 7.0.0.1
Affected: 7.0.1
Affected: 7.0.1.1
Affected: 7.0.2
Affected: 7.0.2.1
Affected: 7.0.3
Affected: 7.0.4
Affected: 7.0.5
Affected: 7.1.0
Affected: 7.1.0.1
Affected: 7.1.0.2
Affected: 7.1.0.3
Affected: 7.2.0
Affected: 7.2.0.1
Affected: 7.2.1
Affected: 7.2.2
Affected: 7.2.3
Affected: 7.3.0
Affected: 7.3.1
Affected: 7.3.1.1
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    Cisco Cisco Umbrella Insights Virtual Appliance Affected: N/A
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    Cisco Cisco Cyber Vision Affected: 3.0.4
Affected: 3.0.0
Affected: 3.0.1
Affected: 3.0.2
Affected: 3.0.3
Affected: 3.0.5
Affected: 3.0.6
Affected: 3.1.0
Affected: 3.1.2
Affected: 3.1.1
Affected: 3.2.3
Affected: 3.2.1
Affected: 3.2.4
Affected: 3.2.0
Affected: 3.2.2
Affected: 4.0.0
Affected: 4.0.1
Affected: 4.0.2
Affected: 4.0.3
Affected: 4.1.0
Affected: 4.1.1
Affected: 4.1.2
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    Cisco Cisco UTD SNORT IPS Engine Software Affected: 16.12.1a
Affected: 16.12.2
Affected: 16.12.3
Affected: 16.12.4
Affected: 16.12.5
Affected: 16.12.6
Affected: 16.12.7
Affected: 16.12.8
Affected: 16.6.1
Affected: 16.6.5
Affected: 16.6.6
Affected: 16.6.7a
Affected: 16.6.9
Affected: 16.6.10
Affected: 17.1.1
Affected: 17.2.1r
Affected: 17.3.1a
Affected: 17.3.2
Affected: 17.3.3
Affected: 17.3.4a
Affected: 17.3.6
Affected: 17.3.5
Affected: 17.3.7
Affected: 3.17.0S
Affected: 3.17.1S
Affected: 17.4.1a
Affected: 17.4.2
Affected: 17.4.1b
Affected: 17.5.1a
Affected: 17.6.1a
Affected: 17.6.2
Affected: 17.6.3a
Affected: 17.6.4
Affected: 17.6.5
Affected: 17.7.1a
Affected: 17.7.2
Affected: 17.10.1a
Affected: 17.9.1a
Affected: 17.9.2a
Affected: 17.9.3a
Affected: 17.8.1a
Affected: Fuji-16.9.2
Affected: Fuji-16.9.4
Affected: Fuji-16.9.6
Affected: Fuji-16.9.3
Affected: Fuji-16.9.7
Affected: Fuji-16.9.8
Affected: Fuji-16.9.5
Affected: Denali-16.3.3
Affected: Denali-16.3.9
Affected: Denali-16.3.7
Affected: Denali-16.3.5
Affected: Denali-16.3.4
Affected: Everest-16.6.3
Affected: Everest-16.6.4
Affected: Everest-16.6.2
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Show details on NVD website

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              "version": "7.0.5"
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            },
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          "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 the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload."
        }
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      "exploits": [
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          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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            "attackVector": "NETWORK",
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            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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      "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 the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.\"}, {\"lang\": \"es\", \"value\": \"Varios productos de Cisco se ven afectados por una vulnerabilidad en el motor de detecci\\u00f3n Snort que podr\\u00eda permitir que un atacante remoto no autenticado omitir las pol\\u00edticas configuradas en un sistema afectado. Esta vulnerabilidad se debe a una falla en el m\\u00f3dulo FTP del motor de detecci\\u00f3n de Snort. Un atacante podr\\u00eda aprovechar esta vulnerabilidad enviando tr\\u00e1fico FTP manipulado a trav\\u00e9s de un dispositivo afectado. Un exploit exitoso podr\\u00eda permitir al atacante omitir la inspecci\\u00f3n de FTP y entregar un payload maliciosa.\"}]",
      "id": "CVE-2023-20071",
      "lastModified": "2024-11-21T07:40:29.093",
      "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\", \"baseScore\": 5.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N\", \"baseScore\": 5.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}]}",
      "published": "2023-11-01T18:15:09.090",
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      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
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    },
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Un exploit exitoso podr\u00eda permitir al atacante omitir la inspecci\u00f3n de FTP y entregar un payload 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Advisory\"]},{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


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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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Detection rules are retrieved from Rulezet.

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