CVE-2021-36213

moderate-risk
Published 2021-07-17

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.

Do I need to act?

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0.77% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Hashicorp

References (8)

Vendor Advisory https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intenti...
Release Notes https://github.com/hashicorp/consul/releases/tag/v1.10.1
Third Party Advisory https://security.gentoo.org/glsa/202208-09
Product https://www.hashicorp.com/blog/category/consul
Vendor Advisory https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intenti...
Release Notes https://github.com/hashicorp/consul/releases/tag/v1.10.1
Third Party Advisory https://security.gentoo.org/glsa/202208-09
Product https://www.hashicorp.com/blog/category/consul
36
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 3/34 · Minimal
Exposure 7/34 · Low