CVE-2023-32082 — etcd is a distributed key-value store for the data of a distributed system

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.26 and 3.5.9, the LeaseTimeToLive API allows access to key names (not value) associated to a lease when `Keys` parameter is true, even a user doesn't have read permission to the

01What is this vulnerability?

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.26 and 3.5.9, the LeaseTimeToLive API allows access to key names (not value) associated to a lease when `Keys` parameter is true, even a user doesn't have read permission to the keys. The impact is limited to a cluster which enables auth (RBAC). Versions 3.4.26 and 3.5.9 fix this issue. There are no…

02Affected products

Vendor	Product	Versions
etcd-io	etcd	< 3.4.26, >= 3.5.0, < 3.5.9

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-05-11T19:22:56.442Z
• Last modified: 2025-01-24T21:29:23.721Z

09References

• github.com — https://github.com/etcd-io/etcd/security/advisories/GHSA-3p4g-rcw5-8298
• github.com — https://github.com/etcd-io/etcd/pull/15656
• github.com — https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.4.md
• github.com — https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md