SB2021061621 - MitM atack in Cisco Email Security Appliance and Cisco Web Security Appliance
Published: June 16, 2021
Security Bulletin ID
SB2021061621
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Certificate Validation (CVE-ID: CVE-2021-1566)
The vulnerability allows a remote attacker to preform MitM attack.
The vulnerability exists due to improper certificate validation when establishing TLS connection. A remote attacker can perform a man-in-the-middle (MitM) attack.
Remediation
Install update from vendor's website.