high
7.7
CWE
120
Advisory Published
Updated

CVE-2022-20927

First published: Thu Nov 10 2022(Updated: )

A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Adaptive Security Appliance Software=9.13.1
Cisco Adaptive Security Appliance Software=9.13.1.2
Cisco Adaptive Security Appliance Software=9.13.1.7
Cisco Adaptive Security Appliance Software=9.13.1.10
Cisco Adaptive Security Appliance Software=9.13.1.12
Cisco Adaptive Security Appliance Software=9.13.1.13
Cisco Adaptive Security Appliance Software=9.13.1.16
Cisco Adaptive Security Appliance Software=9.13.1.19
Cisco Adaptive Security Appliance Software=9.13.1.21
Cisco Adaptive Security Appliance Software=9.14.1
Cisco Adaptive Security Appliance Software=9.14.1.10
Cisco Adaptive Security Appliance Software=9.14.1.15
Cisco Adaptive Security Appliance Software=9.14.1.19
Cisco Adaptive Security Appliance Software=9.14.1.30
Cisco Adaptive Security Appliance Software=9.14.2
Cisco Adaptive Security Appliance Software=9.14.2.4
Cisco Adaptive Security Appliance Software=9.14.2.8
Cisco Adaptive Security Appliance Software=9.14.2.13
Cisco Adaptive Security Appliance Software=9.14.2.15
Cisco Adaptive Security Appliance Software=9.14.3
Cisco Adaptive Security Appliance Software=9.14.3.1
Cisco Adaptive Security Appliance Software=9.14.3.9
Cisco Adaptive Security Appliance Software=9.14.3.11
Cisco Adaptive Security Appliance Software=9.14.3.13
Cisco Adaptive Security Appliance Software=9.14.3.15
Cisco Adaptive Security Appliance Software=9.14.3.18
Cisco Adaptive Security Appliance Software=9.15.1
Cisco Adaptive Security Appliance Software=9.15.1.1
Cisco Adaptive Security Appliance Software=9.15.1.7
Cisco Adaptive Security Appliance Software=9.15.1.10
Cisco Adaptive Security Appliance Software=9.15.1.15
Cisco Adaptive Security Appliance Software=9.15.1.16
Cisco Adaptive Security Appliance Software=9.15.1.17
Cisco Adaptive Security Appliance Software=9.15.1.21
Cisco Firepower Threat Defense>=6.5.0<=6.5.0.5
Cisco Firepower Threat Defense>=6.7.0<=6.7.0.3
Cisco Firepower Threat Defense=6.6.0
Cisco Firepower Threat Defense=6.6.0.1
Cisco Firepower Threat Defense=6.6.1
Cisco Firepower Threat Defense=6.6.3
Cisco Firepower Threat Defense=6.6.4
Cisco Firepower Threat Defense=6.6.5
Cisco Firepower Threat Defense=6.6.5.1
Cisco FirePOWER Services Software for ASA

Remedy

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssl-client-dos-cCrQPkA

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Reference Links

Frequently Asked Questions

  • What is CVE-2022-20927?

    CVE-2022-20927 is a vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software that could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

  • How does CVE-2022-20927 impact Cisco ASA Software?

    CVE-2022-20927 can cause a denial of service (DoS) condition on Cisco ASA Software.

  • How does CVE-2022-20927 impact Cisco FTD Software?

    CVE-2022-20927 can cause a denial of service (DoS) condition on Cisco Firepower Threat Defense (FTD) Software.

  • What is the severity of CVE-2022-20927?

    CVE-2022-20927 has a severity rating of 6.5 (High).

  • Where can I find more information about CVE-2022-20927?

    You can find more information about CVE-2022-20927 on the Cisco Security Advisory page: [link](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssl-client-dos-cCrQPkA)

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