CVE-2022-20960

A vulnerability in Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain TLS connections that are processed by an affected device. An attacker could exploit this vulnerability by establishing a large number of concurrent TLS connections to an affected device. A successful exploit could allow the attacker to cause the device to drop new TLS email messages that come from the associated email servers. Exploitation of this vulnerability does not cause the affected device to unexpectedly reload. The device will recover autonomously within a few hours of when the attack is halted or mitigated.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-gdghHmbV	Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:cisco:email_security_appliance::::::::
	cpe:2.3:a:cisco:email_security_appliance::::::::

Information

Published : 2022-11-04 11:15

Updated : 2022-11-08 07:46

NVD link : CVE-2022-20960

Mitre link : CVE-2022-20960

JSON object : View

CWE

CWE-295

Improper Certificate Validation

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Products Affected

cisco

email_security_appliance

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