High severity · published Jul 17, 2021
CVE-2021-36213
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…
7.5
CVSS
1.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Consul · Hashicorp
1.9.0 before 1.9.8; 1.9.0 before 1.9.8; 1.10.0 before 1.10.1; 1.10.0 before 1.10.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36213
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36213
Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2021-16-consul-s-application-aware-intentions-deny-action-fails-open-when-combined-with-default-deny-policy/26855
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
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