CVE-2021-1566
Cisco Email Security Appliance and Cisco Web Security Appliance Certificate Validation Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to intercept traffic between an affected device and the AMP servers. This vulnerability is due to improper certificate validation when an affected device establishes TLS connections. A man-in-the-middle attacker could exploit this vulnerability by sending a crafted TLS packet to an affected device. A successful exploit could allow the attacker to spoof a trusted host and then extract sensitive information or alter certain API requests.
Una vulnerabilidad en la integración de Cisco Advanced Malware Protection (AMP) for Endpoints de Cisco AsyncOS para Cisco Email Security Appliance (ESA) y Cisco Web Security Appliance (WSA) podría permitir a un atacante remoto no autenticado interceptar el tráfico entre un dispositivo afectado y los servidores AMP. Esta vulnerabilidad es debido a una comprobación inapropiada del certificado cuando un dispositivo afectado establece conexiones TLS. Un atacante tipo "man-in-the-middle" podría explotar esta vulnerabilidad mediante el envio de un paquete TLS diseñado a un dispositivo afectado. Una explotación con éxito podría permitir al atacante falsificar un host confiable y luego extraer información confidencial o alterar determinadas peticiones de la API
CVSS Scores
SSVC
- Decision:Track*
Timeline
- 2020-11-13 CVE Reserved
- 2021-06-16 CVE Published
- 2024-06-19 EPSS Updated
- 2024-11-07 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-295: Improper Certificate Validation
- CWE-296: Improper Following of a Certificate's Chain of Trust
CAPEC
References (1)
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Cisco Search vendor "Cisco" | Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | < 12.5.3-035 Search vendor "Cisco" for product "Asyncos" and version " < 12.5.3-035" | - |
Affected
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Cisco Search vendor "Cisco" | Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | >= 13.0 < 13.0.0-030 Search vendor "Cisco" for product "Asyncos" and version " >= 13.0 < 13.0.0-030" | - |
Affected
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Cisco Search vendor "Cisco" | Email Security Appliance Search vendor "Cisco" for product "Email Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | >= 13.5 < 13.5.3-010 Search vendor "Cisco" for product "Asyncos" and version " >= 13.5 < 13.5.3-010" | - |
Affected
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Cisco Search vendor "Cisco" | Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | < 11.8.3-021 Search vendor "Cisco" for product "Asyncos" and version " < 11.8.3-021" | - |
Affected
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Cisco Search vendor "Cisco" | Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | >= 12.0.0 < 12.0.3-005 Search vendor "Cisco" for product "Asyncos" and version " >= 12.0.0 < 12.0.3-005" | - |
Affected
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Cisco Search vendor "Cisco" | Web Security Appliance Search vendor "Cisco" for product "Web Security Appliance" | - | - |
Affected
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Cisco Search vendor "Cisco" | Asyncos Search vendor "Cisco" for product "Asyncos" | >= 12.5.0 < 12.5.1-043 Search vendor "Cisco" for product "Asyncos" and version " >= 12.5.0 < 12.5.1-043" | - |
Affected
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