Auth bypass in Hashicorp Consul
CVE-2021-38698
HashiCorp Consul and Consul Enterprise 1.10.1 Txn.Apply endpoint allowed services to register proxies for other services, enabling access to service traffic. Fixed in 1.8.15, 1.9.9 and 1.10.2.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.014 · change: -0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.hashicorp.com/blog/category/consul (Product, Vendor Advisory)
- discuss.hashicorp.com/t/hcsec-2021-24-consul-missing-authorization-check-on-txn… (Vendor Advisory)
- security.gentoo.org/glsa/202208-09 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-38698?
- CVE-2021-38698 is a medium-severity vulnerability in Hashicorp Consul, classified under Missing Authorization. CVSS score: 6.5/10. Published 2021-09-07.
- How severe is CVE-2021-38698?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-38698 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.