| Name | CVE-2021-28235 | 
| Description | Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
| Debian Bugs | 1034840 | 
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status | 
|---|
| etcd (PTS) | bullseye | 3.3.25+dfsg-6 | vulnerable | 
|  | bookworm | 3.4.23-4 | vulnerable | 
|  | trixie | 3.5.16-4 | fixed | 
|  | forky, sid | 3.5.16-8 | fixed | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| etcd | source | (unstable) | 3.4.30-1 |  |  | 1034840 | 
Notes
[bookworm] - etcd <ignored> (Minor issue)
[bullseye] - etcd <no-dsa> (Minor issue)
[buster] - etcd <no-dsa> (Minor issue; only when debug is enabled)
https://github.com/etcd-io/etcd/pull/15648
https://github.com/etcd-io/etcd/pull/15655
https://github.com/etcd-io/etcd/commit/1f746597ea6ce9f0a4554108bc853f256e150b0b (v3.4.25)
https://github.com/etcd-io/etcd/commit/3618ab4b07cc9c0883b6a642da198877e25d612b (v3.4.25)