Improper Certificate Validation in Consul - CVE-2021-32574
Published: July 19, 2021
Vulnerability identifier: #VU54946
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-32574
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to xds does not ensure that the Subject Alternative Name of an upstream is validated. A remote attacker can perform a man-in-the-middle (MitM) attack.
Affected software
Consul
Arch Linux
Gentoo Linux
app-admin/consul
IBM Cloud Pak for Watson AIOps
Arch Linux
Gentoo Linux
app-admin/consul
IBM Cloud Pak for Watson AIOps
How to mitigate CVE-2021-32574
Install updates from vendor's website.
Consul - addressed in versions 1.8.14, 1.9.8, 1.10.1
app-admin/consul - update to 1.9.17
IBM Cloud Pak for Watson AIOps - update to 4.1
app-admin/consul - update to 1.9.17
IBM Cloud Pak for Watson AIOps - update to 4.1