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CVE-2021-36213

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Date: July 17, 2021

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.

Language: Go

Severity Score

Related Resources (7)

https://www.hashicorp.com/blog/category/consul
https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855
https://nvd.nist.gov/vuln/detail/CVE-2021-36213
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-36213
https://github.com/hashicorp/consul/releases/tag/v1.10.1
https://security.gentoo.org/glsa/202208-09
https://www.mend.io/vulnerability-database/CVE-2021-36213

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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