CVE-2023-44981
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering.
- Exploit odds
- 2.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.2% in the next 30 days (EPSS).
- Severity: 9.1 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.2% · EPSS, next 30 days
- Weakness
- CWE-639 · Insecure direct object reference
- Record status
- Modified
Affected
- Apache Zookeeper < 3.7.2
- Apache Zookeeper < 3.8.3
- Apache Zookeeper 3.9.0
- Debian Linux 10.0
- Debian Linux 11.0
- Debian Linux 12.0
Attack profile CVSS 3.1 · 9.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2023-44981.md and follow it. Check whether this project is affected by CVE-2023-44981. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b
References
- http://www.openwall.com/lists/oss-security/2023/10/11/4
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b
- https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.debian.org/security/2023/dsa-5544
- http://www.openwall.com/lists/oss-security/2023/10/11/4
- https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b
- https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://www.debian.org/security/2023/dsa-5544