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Fencer Vulns
high 8.1

CVE-2016-5017 json

Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows…

published 2016-09-21 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5972

cvss
8.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.8%
EPSS 6.8% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows attackers to have unspecified impact via a long command string.

Patch / fix

  • zookeeper Debian 14, Debian 13, Debian 12 3.4.9-1

debian advisories DEBIAN-CVE-2016-5017

  • zookeeper Ubuntu Pro 14.04 LTS 3.4.5+dfsg-1ubuntu0.1~esm1
  • zookeeper Ubuntu Pro 16.04 LTS 3.4.8-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2016-5017

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2016-5017 updated cvss 4.9

zookeeper: Buffer overflow vulnerability in C cli shell

  • Red Hat JBoss A-MQ 6 zookeeper Red Hat JBoss BRMS 6 zookeeper Red Hat JBoss Data Virtualization 6 zookeeper Red Hat JBoss Fuse 6 zookeeper Red Hat JBoss Fuse Service Works 6 zookeeper Red Hat OpenShift Enterprise 2 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

Exploit prediction

6.79% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • packetstormsecurity.com http://packetstormsecurity.com/files/138755/ZooKeeper-3.4.8-3.5.2-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.