SB2021041637 - Multiple vulnerabilities in HashiCorp Consul

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2020-25864)

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.

2) Security features bypass (CVE-ID: CVE-2021-28156)

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.

Remediation

Install update from vendor's website.

References

• 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