SB2022092687 - Security restrictions bypass in HashiCorp Consul
Published: September 26, 2022 Updated: August 28, 2023
Security Bulletin ID
SB2022092687
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Unchecked Return Value (CVE-ID: CVE-2022-40716)
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 update from vendor's website.