Vulnerability Monitor

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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.

Published

2022-11-04T18:15:11.347

Last Modified

2024-11-21T06:43:55.350

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-295
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco email_security_appliance < 14.2.1-015 Yes
Application cisco email_security_appliance < 14.3.0-020 Yes
References