Skip to content
Fencer Vulns
critical 9.1

CVE-2024-51504 json

Apache ZooKeeper: Authentication bypass with IP-based authentication in Admin Server

published 2024-11-07 2 y ago modified 2026-09-10 1 mo ago also BIT-zookeeper-2024-51504 , EUVD-2024-45368 , GHSA-g93m-8x6h-g5gv

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

When using IPAuthenticationProvider in ZooKeeper Admin Server there is a possibility of Authentication Bypass by Spoofing -- this only impacts IP based authentication implemented in ZooKeeper Admin Server. Default configuration of client's IP address detection in IPAuthenticationProvider, which uses HTTP request headers, is weak and allows an attacker to bypass authentication via spoofing client's IP address in request headers. Default configuration honors X-Forwarded-For HTTP header to read client's IP address. X-Forwarded-For request header is mainly used by proxy servers to identify the client and can be easily spoofed by an attacker pretending that the request comes from a different IP address. Admin Server commands, such as snapshot and restore arbitrarily can be executed on successful exploitation which could potentially lead to information leakage or service availability issues. Users are recommended to upgrade to version 3.9.3, which fixes this issue.

Patch / fix

  • maven org.apache.zookeeper:zookeeper 3.9.3
  • bitnami zookeeper 3.9.3
  • Apache Software Foundation Apache ZooKeeper 3.9.3
  • apache zookeeper 3.9.3
  • zookeeper Debian 14, Debian 13 3.9.3-1

debian advisories DEBIAN-CVE-2024-51504

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-51504 updated cvss 7.3

org.apache.zookeeper: Apache ZooKeeper: Authentication bypass with IP-based authentication in Admin Server

  • Red Hat A-MQ Clients 2 zookeeper Red Hat Logging Subsystem for Red Hat OpenShift zookeeper Red Hat AMQ Broker 7 zookeeper Red Hat build of Apache Camel for Spring Boot 3 zookeeper Red Hat build of Apache Camel for Spring Boot 4 zookeeper Red Hat build of Debezium 2 zookeeper
    +8 more products
    Red Hat Data Grid 8 zookeeper Red Hat Fuse 7 zookeeper Red Hat Integration Camel K 1 zookeeper Red Hat JBoss Data Grid 7 zookeeper Red Hat JBoss Enterprise Application Platform 7 zookeeper Red Hat JBoss Enterprise Application Platform 8 zookeeper Red Hat JBoss Enterprise Application Platform Expansion Pack zookeeper Red Hat streams for Apache Kafka zookeeper
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
OSV 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.zookeeper:zookeeper
>=3.9.0, <3.9.3
3.9.3
bitnami zookeeper
>=3.9.0, <3.9.3
3.9.3

Affected products

  • Apache Software Foundation Apache ZooKeeper
  • apache zookeeper

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.