Resource exhaustion in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2022-20960

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Main Vulnerability Database Vulnerabilities #VU68968

Resource exhaustion in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2022-20960

Published: November 4, 2022


Vulnerability identifier: #VU68968
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-20960
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco AsyncOS for Cisco Email Security Appliance
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of certain TLS connections processed by the device. A remote attacker can cause the device to drop new TLS email messages that come from the associated email servers.


Remediation

Install updates from vendor's website.

External links