etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.4.44, 3.6.11, 3.5.30
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to bypass RBAC authorization checks. An authenticated user without sufficient read or lease-related permissions may be able to access unauthorized data or attach leases by invoking transaction operations with these features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- etcd-io etcd
fixed in 3.4.44; From 3.5.0 · through 3.5.29; From 3.6.0 · through 3.6.10
- go.etcd.io/etcd/v3Go
From 3.6.0 · fixed in 3.6.11
- go.etcd.io/etcd/v3Go
From 3.5.0 · fixed in 3.5.30
- go.etcd.io/etcdGo
fixed in 3.4.44
- go.etcd.io/etcd/server/v3Go
From 3.5.0 · fixed in 3.5.30; From 3.6.0 · fixed in 3.6.11