CVE-2021-36213
HIGH
7.5
CVSS Score
Published: July 17, 2021 at 05:32 PM UTC
Updated: June 17, 2026 at 03:58 AM UTC
1 product affected across 1 vendorConsul
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
1.10.0 ≤ v < 1.10.11.9.0 ≤ v < 1.9.8
Affected range stops below 1.10.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.9.8, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855x_refsource_CONFIRMRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/hashicorp/consul/releases/tag/v1.10.1Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202208-09x_refsource_MISCProductVendor Advisory
Source: [email protected]
https://www.hashicorp.com/blog/category/consulCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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