Input validation error in Consul and Consul Enterprise - CVE-2023-0845

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Main Vulnerability Database Vulnerabilities #VU80038

Input validation error in Consul and Consul Enterprise - CVE-2023-0845

Published: August 28, 2023


Vulnerability identifier: #VU80038
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-0845
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: HashiCorp
Affected software:
Consul
Consul Enterprise

Detailed vulnerability description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user with service:write permissions can configure the upstreams to reference a peering destination and crash the Consul server or client agent hosting the xDS connection to an API gateway or ingress gateway.


How to mitigate CVE-2023-0845

Install updates from vendor's website.

Sources