CVE-2018-8012

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.

Published: 2018-05-21 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-8012 is rated High Risk (68.1/100): CVSS High severity, with high exploitation likelihood (EPSS 8.72%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +8.14% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-8012

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.58% 8.72% +8.14%
2 2026-06-07 1.37% 0.58% -0.79%
3 2025-12-21 — 1.37% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-8012

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-8012

GitHub Security Advisory for CVE-2018-8012

GHSA-ccqf-c5hq-77mp · Severity: high · Ecosystem: maven — Missing Authorization in Apache ZooKeeper

OS Trackers for CVE-2018-8012

vendor priority summary link
debian not yet assigned CVE-2018-8012 not yet assigned priority: Debian including 1 source packages (zookeeper), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-8012
redhat high — https://access.redhat.com/security/cve/CVE-2018-8012
suse medium — https://www.suse.com/security/cve/CVE-2018-8012/
ubuntu medium CVE-2018-8012 medium priority: Ubuntu including 1 source packages (zookeeper), 16 status rows across 16 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, trusty, upstream, xenial): not-affected 13, released 2, ignored 1. https://ubuntu.com/security/CVE-2018-8012

Affected software / configurations for CVE-2018-8012

Vendor Product Version Raw CPE
apache zookeeper < 3.4.10 cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*
apache zookeeper >= 3.5.0, <= 3.5.3 cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*
apache zookeeper 3.5.0 cpe:2.3:a:apache:zookeeper:3.5.0:alpha:*:*:*:*:*:*
apache zookeeper 3.5.3 cpe:2.3:a:apache:zookeeper:3.5.3:beta:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
oracle goldengate_stream_analytics < 19.1.0.0.1 cpe:2.3:a:oracle:goldengate_stream_analytics:*:*:*:*:*:*:*:*

References for CVE-2018-8012

URL Tags
http://www.securityfocus.com/bid/104253 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040948 Third Party Advisory VDB Entry
https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3%40%3Ccommits.nifi.apache.org%3E
https://lists.apache.org/thread.html/c75147028c1c79bdebd4f8fa5db2b77da85de2b05ecc0d54d708b393%40%3Cdev.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r73daf1fc5d85677d9a854707e1908d14e174b7bbb0c603709c0ab33f%40%3Coak-commits.jackrabbit.apache.org%3E
https://lists.apache.org/thread.html/r8f0d920805af93033c488af89104e2d682662bacfb8406db865d5e14%40%3Cdev.jackrabbit.apache.org%3E
https://lists.apache.org/thread.html/rc5bc4ddb0deabf8cfb69378cecee56fcdc76929bea9e6373cb863870%40%3Cdev.jackrabbit.apache.org%3E
https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
https://lists.apache.org/thread.html/re3a4048e9515d4afea416df907a612ed384a16c57cf99e97ee4a12f2%40%3Cdev.jackrabbit.apache.org%3E
https://www.debian.org/security/2018/dsa-4214 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html Patch Third Party Advisory
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