SB2022042739 - Multiple vulnerabilities in Cisco ASA and Cisco FTD

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Main Vulnerability Database SB2022042739

SB2022042739 - Multiple vulnerabilities in Cisco ASA and Cisco FTD

Published: April 27, 2022

Security Bulletin ID SB2022042739
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Incorrect Privilege Assignment (CVE-ID: CVE-2022-20759)

CWE-ID: CWE-266 - Incorrect Privilege Assignment

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to improper separation of authentication and authorization scopes in the web services interface for remote access VPN feature. A remote authenticated user can send specially crafted HTTP requests to gain privilege level 15 access to the web management interface of the device


2) Missing Required Cryptographic Step (CVE-ID: CVE-2022-20742)

CWE-ID: CWE-325 - Missing Required Cryptographic Step

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to read or modify data within an IPsec IKEv2 VPN tunnel.

The vulnerability exists due to improper implementation of Galois/Counter Mode (GCM) ciphers in an IPsec VPN library. A remote attacker can perform MitM attack by intercepting a sufficient number of encrypted messages across an affected IPsec IKEv2 VPN tunnel and then using cryptanalytic techniques to break the encryption.


3) Resource exhaustion (CVE-ID: CVE-2022-20760)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in the DNS inspection handler. A remote attacker can send specially crafted DNS requests to the affected device, trigger resource exhaustion and perform a denial of service (DoS) attack.


4) Input validation error (CVE-ID: CVE-2022-20745)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the web services interface for remote access VPN feature. A remote attacker can send specially crafted HTTP requests to the device and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References