SB2022042739 - Multiple vulnerabilities in Cisco ASA and Cisco FTD

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2022042739

SB2022042739 - Multiple vulnerabilities in Cisco ASA and Cisco FTD

Published: April 27, 2022

Security Bulletin ID SB2022042739
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 secuirty vulnerabilities.


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

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)

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)

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)

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