Denial of service in HashiCorp Consul



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-0845
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Consul
Server applications / Other server solutions

Consul Enterprise
Server applications / Other server solutions

Vendor HashiCorp

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU80038

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0845

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Consul: 1.14.0 - 1.14.4

Consul Enterprise: 1.14.0 - 1.14.4

CPE2.3 External links

http://discuss.hashicorp.com/t/hcsec-2023-06-consul-server-panic-when-ingress-and-api-gateways-configured-with-peering-connections/51197


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###