Multiple vulnerabilities in HashiCorp Consul

1) Cross-site scripting

EUVDB-ID: #VU52310

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-25864

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Consul: 1.7.0 - 1.9.4

CPE2.3

• cpe:2.3:a:hashicorp:consul:1.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.4:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.5:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.6:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.7:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.8:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.7.9:*:*:*:*:*:*:*

External links

https://github.com/hashicorp/consul/releases/tag/v1.9.5
https://github.com/hashicorp/consul/releases/tag/v1.8.10
https://github.com/hashicorp/consul/releases/tag/v1.7.14

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) Security features bypass

EUVDB-ID: #VU52311

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-28156

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the security features bypass issue. A remote attacker can bypass the audit log.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Consul: 1.8.0 - 1.9.4

CPE2.3

• cpe:2.3:a:hashicorp:consul:1.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.2:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.4:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.5:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.6:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.7:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.8:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:consul:1.8.9:*:*:*:*:*:*:*

External links

https://github.com/hashicorp/consul/releases/tag/v1.9.5

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.