Multiple vulnerabilities in HashiCorp Consul



| Updated: 2024-09-27
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-39325
CVE-2023-44487
CWE-ID CWE-400
Exploitation vector Network
Public exploit Vulnerability #2 is being exploited in the wild.
Vulnerable software
Subscribe 		Consul Enterprise
Server applications / Other server solutions

Consul
Server applications / Other server solutions

Vendor HashiCorp

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU82064

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-39325

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to excessive consumption of internal resources when handling HTTP/2 requests. A remote attacker can bypass the http2.Server.MaxConcurrentStreams setting by creating new connections while the current connections are still being processed, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Consul Enterprise: 1.14.0 - 1.16.2

Consul: 1.14.0 - 1.16.2

CPE2.3 External links

http://github.com/hashicorp/consul/releases/tag/v1.16.3
http://github.com/hashicorp/consul/releases/tag/v1.14.11
http://github.com/hashicorp/consul/releases/tag/v1.15.7
http://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Resource exhaustion

EUVDB-ID: #VU81728

Risk: High

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-44487

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

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

The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Consul Enterprise: 1.14.0 - 1.16.2

Consul: 1.14.0 - 1.16.2

CPE2.3 External links

http://github.com/hashicorp/consul/releases/tag/v1.16.3
http://github.com/hashicorp/consul/releases/tag/v1.14.11
http://github.com/hashicorp/consul/releases/tag/v1.15.7
http://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



###SIDEBAR###