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[GHSA-7xrh-hqfc-g7qr] Hostname verification in Apache ZooKeeper ZKTrustManager... #7130
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Mar 10, 2026
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| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
| @@ -1,14 +1,60 @@ | ||||||
| { | ||||||
| "schema_version": "1.4.0", | ||||||
| "id": "GHSA-7xrh-hqfc-g7qr", | ||||||
| "modified": "2026-03-07T09:30:15Z", | ||||||
| "modified": "2026-03-07T09:30:21Z", | ||||||
| "published": "2026-03-07T09:30:15Z", | ||||||
| "aliases": [ | ||||||
| "CVE-2026-24281" | ||||||
| ], | ||||||
| "summary": "Apache ZooKeeper: Reverse-DNS fallback enables hostname verification bypass in ZooKeeper ZKTrustManager", | ||||||
| "details": "Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails, allowing attackers who control or spoof PTR records to impersonate ZooKeeper servers or clients with a valid certificate for the PTR name. It's important to note that attacker must present a certificate which is trusted by ZKTrustManager which makes the attack vector harder to exploit. Users are recommended to upgrade to version 3.8.6 or 3.9.5, which fixes this issue by introducing a new configuration option to disable reverse DNS lookup in client and quorum protocols.", | ||||||
| "severity": [], | ||||||
| "affected": [], | ||||||
| "affected": [ | ||||||
| { | ||||||
| "package": { | ||||||
| "ecosystem": "Maven", | ||||||
| "name": "org.apache.zookeeper:zookeeper" | ||||||
| }, | ||||||
| "ranges": [ | ||||||
| { | ||||||
| "type": "ECOSYSTEM", | ||||||
| "events": [ | ||||||
| { | ||||||
| "introduced": "3.9.0" | ||||||
| }, | ||||||
| { | ||||||
| "fixed": "3.9.5" | ||||||
| } | ||||||
| ] | ||||||
| } | ||||||
| ], | ||||||
| "database_specific": { | ||||||
| "last_known_affected_version_range": "<= 3.9.4" | ||||||
| } | ||||||
| }, | ||||||
| { | ||||||
| "package": { | ||||||
| "ecosystem": "Maven", | ||||||
| "name": "org.apache.zookeeper:zookeeper" | ||||||
| }, | ||||||
| "ranges": [ | ||||||
| { | ||||||
| "type": "ECOSYSTEM", | ||||||
| "events": [ | ||||||
| { | ||||||
| "introduced": "3.8.0" | ||||||
| }, | ||||||
| { | ||||||
| "fixed": "3.8.6" | ||||||
| } | ||||||
| ] | ||||||
| } | ||||||
| ], | ||||||
| "database_specific": { | ||||||
| "last_known_affected_version_range": "<= 3.8.5" | ||||||
|
||||||
| "last_known_affected_version_range": "<= 3.8.5" | |
| "last_known_affected_version_range": "< 3.8.6" |
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"last_known_affected_version_range" is expressed as "<= 3.9.4", which can incorrectly exclude patch/qualifier versions that still fall before the fixed release (e.g., "3.9.4.1" or similar Maven-style versions). To avoid under-reporting affected versions, align this with the fixed boundary (e.g., express it as "< 3.9.5").