Inefficient Algorithmic Complexity in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2020-3548
Published: September 3, 2020
Vulnerability identifier: #VU46248
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3548
CWE-ID: CWE-407
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to inefficient processing of incoming Transport Layer Security (TLS) traffic. A remote attacker can send specially crafted TLS packets, trigger a prolonged state of high CPU utilization and perform a denial of service (DoS) attack.
Affected software
Cisco AsyncOS for Cisco Email Security Appliance
How to mitigate CVE-2020-3548
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.