CVE-2021-37219: hashicorp consul Improper Certificate Validation
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-37219DEBIAN-CVE-2021-37219CGA-7vvw-jx57-7597CGA-8chx-x3j4-r43rCGA-gq8c-w9g4-376xCGA-j655-w776-6v79CGA-qfw5-g6q8-hrq3CGA-wp2q-j3wm-5h6cGHSA-ccw8-7688-vqx4BIT-consul-2021-37219GO-2022-0593
Published 07-09-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-37219 is a high (CVSS 8.8) Improper Certificate Validation vulnerability in hashicorp consul. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.4% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
1.15%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 6Timeline
- 07-09-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.8.15, 1.9.9 and 1.10.2.
CVSS metrics
7 scores · 6 sources · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · WolfiEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · GoEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Medium 6.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.15%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
0.00 pp
From 1.15% on 20-09-2026
20-09-202620-10-2026
EPSS score1.15%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard3 products
- k3d< 5.6.0-r11
- k3d-proxy< 5.6.0-r11
- k3d-tools< 5.6.0-r11
Wolfi3 products
- k3d< 5.6.0-r11
- k3d-proxy< 5.6.0-r11
- k3d-tools< 5.6.0-r11
Debian1 product
- consulAll versions (No fix recorded)
Github.com/hashicorp1 product
- consul≥ 1.9.0, < 1.9.9 | < 1.8.15 | ≥ 1.10.1, < 1.10.2
Hashicorp1 product
- consul< 1.8.15 | ≥ 1.9.0, < 1.9.9 | ≥ 1.10.0, < 1.10.2
Ubuntu1 product
- consulAll versions (No fix recorded)
6 vendors · 10 products
References
13 links- discuss.hashicorp.com/t/hcsec-2021-22-consul-raft-rpc-privilege-escalation/29024X Refsource MISCREPORTAdvisoryWEBVendor Advisory
Show all 13 references
- github.com/hashicorp/consulPACKAGE