Description
In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not perform any permission checks when a given directory path exists already. A possible workaround is to ensure the directories have the desired permission (700).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| etcd-io | etcd | < 3.3.23, < 3.4.10 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | etcd | 3.3.25+dfsg-5 | — |
| Debian 13 | etcd | 3.3.25+dfsg-5 | — |
| Debian 12 | etcd | 3.3.25+dfsg-5 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | etcd | No fix yet | — |
| Ubuntu 25.10 | etcd | No fix yet | — |
| Ubuntu 20.04 LTS | etcd | 3.2.26+dfsg-6ubuntu0.1 | USN-5628-1 |
| Ubuntu 16.04 LTS | etcd | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 24.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 22.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 18.04 LTS | etcd | 3.2.17+dfsg-1ubuntu0.1~esm1 | USN-5628-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 16 | etcd | 3.3.23-1.el8ost | RHSA-2021:0916 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | etcd | 3.5.0-3 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/etcd-io/etcd | >= 3.4.0-rc.0, < 3.4.10 | 3.4.10 | GHSA-chh6-ppwq-jh92 |
| Go | github.com/etcd-io/etcd | < 3.3.23 | 3.3.23 | GHSA-chh6-ppwq-jh92 |
Advisories 4
- RHSA-2021:0916 Red Hat Security Advisory: Red Hat OpenStack Platform 16.1.4 (etcd) security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- WID-SEC-2022-0510 IBM DB2: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2026
- USN-5628-2 etcd vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-5628-1 etcd vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026