9.1
CRITICAL
CVE-2023-44981
Apache ZooKeeper SASL Quorum Peer Authorization Bypass 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.

INFO

Published Date :

Oct. 11, 2023, 12:15 p.m.

Last Modified :

June 21, 2024, 7:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-44981 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Apache zookeeper
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-44981.

URL Resource
http://www.openwall.com/lists/oss-security/2023/10/11/4 Mailing List Third Party Advisory
https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b Issue Tracking Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html Mailing List
https://security.netapp.com/advisory/ntap-20240621-0007/
https://www.debian.org/security/2023/dsa-5544 Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-44981 vulnerability anywhere in the article.

  • Cybersecurity News
Apache ZooKeeper Security Alert: Important Flaw Impacts Admin Server (CVE-2024-51504)

Apache ZooKeeper, the widely used centralized service for managing configuration and synchronization across distributed applications, has recently issued a security advisory regarding a significant vu ... Read more

Published Date: Nov 08, 2024 (1 week, 2 days ago)

The following table lists the changes that have been made to the CVE-2023-44981 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Jun. 21, 2024

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://security.netapp.com/advisory/ntap-20240621-0007/ [No types assigned]
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Feb. 21, 2024

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html Mailing List
    Changed Reference Type https://www.debian.org/security/2023/dsa-5544 No Types Assigned https://www.debian.org/security/2023/dsa-5544 Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 01, 2023

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2023/dsa-5544 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 21, 2023

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2023/10/msg00029.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 18, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type http://www.openwall.com/lists/oss-security/2023/10/11/4 No Types Assigned http://www.openwall.com/lists/oss-security/2023/10/11/4 Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b No Types Assigned https://lists.apache.org/thread/wf0yrk84dg1942z1o74kd8nycg6pgm5b Issue Tracking, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:* versions up to (excluding) 3.7.2 *cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:* versions from (including) 3.8.0 up to (excluding) 3.8.3 *cpe:2.3:a:apache:zookeeper:3.9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 11, 2023

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2023/10/11/4 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-44981 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-44981 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.23 }} 0.34%

score

0.85911

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability