Allocation of Resources Without Limits or Throttling in SonicOS - CVE-2022-22278
Published: April 27, 2022
Vulnerability identifier: #VU62659
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-22278
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SonicOS
SonicOS
Software vendor:
SonicWall
SonicWall
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to CFS (Content filtering service) in SonicOS returns a large 403 forbidden
HTTP response message to the source address when users try to access
resources prohibited by CFS feature. A remote attacker can send multiple requests to the system that trigger 403 error and consume all available bandwidth.
Remediation
Install updates from vendor's website.