SB2021110412 - Denial of service in Cisco AsyncOS software for Cisco Email Security Appliance
Published: November 4, 2021
Security Bulletin ID
SB2021110412
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2021-34741)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation of incoming emails. A remote attacker can send a specially crafted email and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.