Bug#1054224: zookeeper: CVE-2023-44981

[Salvatore Bonaccorso]

Source: zookeeper
Version: 3.8.0-11
Severity: grave
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: found -1 3.4.13-6

Hi,

The following vulnerability was published for zookeeper.

CVE-2023-44981[0]:
| Authorization Bypass Through User-Controlled Key vulnerability in
| Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in
| ZooKeeper (quorum.auth.enableSasl=true), the authorization is done
| by verifying that the instance part in SASL authentication ID is
| listed in zoo.cfg server list. The instance part in SASL auth ID is
| optional and if it's missing, like 'eve at EXAMPLE.COM', the
| authorization check will be skipped. As a result an arbitrary
| endpoint could join the cluster and begin propagating counterfeit
| changes to the leader, essentially giving it complete read-write
| access to the data tree. Quorum Peer authentication is not enabled
| by default.  Users are recommended to upgrade to version 3.9.1,
| 3.8.3, 3.7.2, which fixes the issue.  Alternately ensure the
| ensemble election/quorum communication is protected by a firewall as
| this will mitigate the issue.  See the documentation for more
| details on correct cluster administration.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-44981
    https://www.cve.org/CVERecord?id=CVE-2023-44981
[1] https://www.openwall.com/lists/oss-security/2023/10/11/4
[2] https://github.com/apache/zookeeper/commit/96b3172ca249a8580e9a315d589d319286cee4ee

Regards,
Salvatore