7.5

CVE-2018-8012: apache software foundation apache zookeeper Missing Authorization

Modified
AliasesUBUNTU-CVE-2018-8012DEBIAN-CVE-2018-8012DSA-4214-1
Published 21-05-2018Last modified 17-09-2024

Vulnerability summary

CVE-2018-8012 is a high (CVSS 7.5) Missing Authorization vulnerability in apache software foundation apache zookeeper. EPSS estimates a 8.42% chance of exploitation in the next 30 days, higher than 94.9% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
8.42%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-4789-1

Timeline

  1. 21-05-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.

CVSS metrics

6 scores · 4 sources · 3 versions

EPSS trend

Probability

8.42%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

Decrease -0.05 pp

From 8.47% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • zookeeper< 3.4.9-3+deb8u1 | < 3.4.9-3+deb9u1 | < 3.4.10-2
  • debian_linuxEOL8.0 | 9.0
Apache1 product
  • zookeeperEOL< 3.4.10 | ≥ 3.5.0, ≤ 3.5.3 | 3.5.0:alpha | 3.5.3:beta
Apache software foundation1 product
  • apache zookeeperApache ZooKeeper prior to 3.4.10, Apache ZooKeeper 3.5.0-alpha through 3.5.3-beta
Oracle1 product
Org.apache.zookeeper1 product
  • zookeeper< 3.4.10 | ≥ 3.5.0-alpha, < 3.5.4-beta
Ubuntu1 product
  • zookeeperAll versions (No fix recorded) | < 3.4.8-1ubuntu0.1~esm1

6 vendors · 7 products

References

29 links
Show all 29 references