CVE-2026-24281
HIGH7.4EPSS 0.03%Apache ZooKeeper: Reverse-DNS fallback enables hostname verification bypass in ZooKeeper ZKTrustManager
發布日:2026/3/7修改日:2026/4/28
描述
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.
受影響套件(3)
- Bitnami/zookeeper>= 3.8.0, < 3.8.6, >= 3.9.0, < 3.9.5
- Debian/zookeeperfrom 0
- Maven/org.apache.zookeeper:zookeeper>= 3.8.0, < 3.8.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
參考連結(7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-24281
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-24281
- PATCHhttps://github.com/apache/zookeeper
- WEBhttps://github.com/apache/zookeeper/commit/66c4efecdda1302d9cfb3af9eedb122b74452bf3
- WEBhttps://issues.apache.org/jira/browse/ZOOKEEPER-4986
- WEBhttps://lists.apache.org/thread/088ddsbrzhd5lxzbqf5n24yg0mwh9jt2
- WEBhttp://www.openwall.com/lists/oss-security/2026/03/07/4