CVE-2021-1566
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco We…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Email Security Appliance | All versions |
| Cisco | Asyncos | before 12.5.3-035 from 13.0 before 13.0.0-030 from 13.5 before 13.5.3-010 before 11.8.3-021 from 12.0.0 before 12.0.3-005 from 12.5.0 before 12.5.1-043 |
| Cisco | Web Security Appliance | All versions |