Default Deny Policy Bypass in HashiCorp Consul and Consul Enterprise 1.9.0 - 1.10.0

CVE-2021-36213 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

HashiCorp Consul and Consul Enterprise 1.9.0 through 1.10.0 default deny policy with a single L7 application-aware intention deny action cancels out, causing the intention to incorrectly fail open, allowing L4 traffic. Fixed in 1.9.8 and 1.10.1.

Learn more about our Web Application Penetration Testing UK.