QID 317174

Date Published: 2022-05-09

QID 317174: Cisco Adaptive Security Appliance (ASA) Domain Name System (DNS) Inspection Denial of Service (DoS) Vulnerability (cisco-sa-asaftd-dos-nJVAwOeq)

A vulnerability in the DNS inspection handler of Cisco Adaptive Security Appliance (ASA) Software
could allow an unauthenticated, remote attacker to cause a denial of service condition (DoS) on an affected device.

Affected Products
Cisco products if they are running a vulnerable release of Cisco ASA Software and have DNS inspection enabled. Vulnerable versions:
Earlier than 9.12.4.38
From 9.13 Prior to 9.14.4
From 9.15 Prior to 9.15.1.21
From 9.16 Prior to 9.16.2.14
From 9.17 Prior to 9.17.1.7

QID Detection Logic (Authenticated):
The check matches Cisco ASA OS version retrieved via Unix Auth using "version" command.

A successful exploit could allow the attacker to cause the device to stop responding, resulting in a DoS condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution

    Customers are advised to refer to cisco-sa-asaftd-dos-nJVAwOeq for more information.

    Vendor References

    CVEs related to QID 317174

    CVE-2022-20760 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-asaftd-dos-nJVAwOeq URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-nJVAwOeq
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