Vulnerability Description
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 '[email protected]', 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Zookeeper | < 3.7.2 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2023/10/11/4Mailing ListThird Party Advisory
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5bIssue TrackingVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00029.htmlMailing List
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.debian.org/security/2023/dsa-5544Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/4Mailing ListThird Party Advisory
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5bIssue TrackingVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00029.htmlMailing List
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.debian.org/security/2023/dsa-5544Mailing ListThird Party Advisory
FAQ
What is CVE-2023-44981?
CVE-2023-44981 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 ...
How severe is CVE-2023-44981?
CVE-2023-44981 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-44981?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Zookeeper, Debian Debian Linux.