#VU80034 Unchecked Return Value in Consul and Consul Enterprise - CVE-2022-40716
Published: August 28, 2023
Vulnerability identifier: #VU80034
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-40716
CWE-ID: CWE-252
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Consul
Consul Enterprise
Consul
Consul Enterprise
Software vendor:
HashiCorp
HashiCorp
Description
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to an error when handling CSR requests at the RPC endpoint. A remote user with access to a client agent’s mTLS certificate and a valid ACL token for any service within the mesh can send a specially crafted certificate signing request (CSR) to the Consul’s internal RPC endpoint and bypass intended ACL token restrictions.
Remediation
Install updates from vendor's website.