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 incorrectly fail open, allowing L4 traffic. Fixed in 1.9.8 and 1.10.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 77%
VendorProductVersion
hashicorpconsul
1.9.0 ≤
𝑥
< 1.9.8
hashicorpconsul
1.9.0 ≤
𝑥
< 1.9.8
hashicorpconsul
1.10.0 ≤
𝑥
< 1.10.1
hashicorpconsul
1.10.0 ≤
𝑥
< 1.10.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
consul
bullseye
1.8.7+dfsg1-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
consul
noble
dne
mantic
not-affected
lunar
dne
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
groovy
ignored
focal
needs-triage
bionic
needs-triage
xenial
ignored
trusty
dne
References
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://github.com/hashicorp/consul/releases/tag/v1.10.1
https://security.gentoo.org/glsa/202208-09
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://github.com/hashicorp/consul/releases/tag/v1.10.1
https://security.gentoo.org/glsa/202208-09
https://www.hashicorp.com/blog/category/consul