Improper access control in Consul - CVE-2021-41805
Published: December 16, 2021 / Updated: December 7, 2022
Vulnerability identifier: #VU59041
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-41805
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: HashiCorp
Affected software:
Consul
Consul
Detailed vulnerability description
The vulnerability allows a remote user to gain unauthorized access to sensitive information.
The vulnerability exists due to improper access restrictions. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace. A remote user can send a specially crafted request and gain unauthorized access to the affected application.
How to mitigate CVE-2021-41805
Install update from vendor's website.