Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2022-20947
CVE-2022-20947:
Cisco Adaptive Security Appliance (ASA) vulnerability analysis and mitigation
Overview
A vulnerability (CVE-2022-20947) was discovered in the dynamic access policies (DAP) functionality of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software. The vulnerability was disclosed on November 9, 2022, and affects systems with remote access SSL VPN enabled, HostScan enabled, and at least one custom DAP configured (Cisco Advisory).
Technical details
The vulnerability stems from improper processing of HostScan data received from the Posture (HostScan) module. It has been assigned CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). The vulnerability has received a CVSS Base Score of 8.6 (High) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H (Cisco Advisory).
Impact
A successful exploitation of this vulnerability could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition (Cisco Advisory).
Mitigation and workarounds
Cisco has released software updates that address this vulnerability. While there are no direct workarounds, administrators can disable HostScan by issuing the 'no hostscan enable' command in the configuration mode of the device. However, this mitigation should be evaluated for potential impacts on functionality or performance in the specific environment (Cisco Advisory).
Additional resources
Source: This report was generated using AI
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