CVE-2022-20805: Cisco Umbrella Secure Web Gateway File Decryption Bypass Vulnerability
A vulnerability in the automatic decryption process in Cisco Umbrella Secure Web Gateway (SWG) could allow an authenticated, adjacent attacker to bypass the SSL decryption and content filtering policies on an affected system. This vulnerability is due to how the decryption function uses the TLS Sever Name Indication (SNI) extension of an HTTP request to discover the destination domain and determine if the request needs to be decrypted. An attacker could exploit this vulnerability by sending a crafted request over TLS from a client to an unknown or controlled URL. A successful exploit could allow an attacker to bypass the decryption process of Cisco Umbrella SWG and allow malicious content to be downloaded to a host on a protected network. There are workarounds that address this vulnerability.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2022-20805?
CVE-2022-20805 is rated as a high severity vulnerability due to its potential to bypass SSL decryption and content filtering policies.
How do I fix CVE-2022-20805?
To mitigate CVE-2022-20805, update Cisco Umbrella Secure Web Gateway to the latest patched version provided by Cisco.
Who is affected by CVE-2022-20805?
Any organization using Cisco Umbrella Secure Web Gateway with the affected versions may be vulnerable to CVE-2022-20805.
What type of attackers can exploit CVE-2022-20805?
Authenticated, adjacent attackers can exploit CVE-2022-20805 to bypass security mechanisms on vulnerable systems.
What happens if CVE-2022-20805 is exploited?
Exploitation of CVE-2022-20805 allows attackers to bypass SSL decryption and compromise content filtering, which may lead to unauthorized access to sensitive data.