#VU18668 Improper access control in ZooKeeper - CVE-2019-0201

Vulnerability identifier: #VU18668

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-0201

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ZooKeeper
Server applications / Database software

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions when "getACL()" command doesn’t check any permission when retrieves the ACLs of the requested node and returns all information contained in the ACL Id field as plaintext string. A remote attacker can gain READ permissions to list ACL.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ZooKeeper: 0.0.1 - 3.5.4

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External links
https://www.securityfocus.com/bid/108427
https://issues.apache.org/jira/browse/ZOOKEEPER-1392
https://lists.apache.org/thread.html/f6112882e30a31992a79e0a8c31ac179e9d0de7c708de3a9258d4391@%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/05/msg00033.html
https://zookeeper.apache.org/security.html#CVE-2019-0201

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.