HashiCorp Consul update for Go



| Updated: 2023-02-08
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-41720
CVE-2022-41717
CWE-ID CWE-22
CWE-770
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
Subscribe 		Consul Enterprise
Server applications / Other server solutions

Vendor HashiCorp

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal

EUVDB-ID: #VU70332

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41720

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to the way os.DirFS function and http.Dir type handle empty values on Windows, allowing an attacker with control over the path to view arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Consul Enterprise: 1.13.0 - 1.14.2

CPE2.3 External links

http://github.com/hashicorp/consul/releases/tag/v1.13.5
http://github.com/hashicorp/consul/releases/tag/v1.14.3


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) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU70334

Risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-41717

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The vulnerability exists due to excessive memory growth when handling HTTP/2 server requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Consul Enterprise: 1.13.0 - 1.14.2

CPE2.3 External links

http://github.com/hashicorp/consul/releases/tag/v1.13.5
http://github.com/hashicorp/consul/releases/tag/v1.14.3


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. However, proof of concept for this vulnerability is available.



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