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Fencer Intel
medium 4.3

CVE-2014-8602 json

iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of servic…

published 2014-12-11 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-8439

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
32.2%
EPSS 32.2% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.

Patch / fix

  • unbound Debian 14, Debian 13, Debian 12 1.4.22-3

debian advisories DEBIAN-CVE-2014-8602

  • unbound Ubuntu 14.04 LTS 1.4.22-1ubuntu4.14.04.1

ubuntu advisories UBUNTU-CVE-2014-8602

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

  • unbound RHEL 7 1.4.20-26.el7
  • unbound-libs RHEL 7 1.4.20-26.el7
  • unbound-python RHEL 7 1.4.20-26.el7

red hat advisories RHSA-2015:2455

  • unbound openSUSE Tumbleweed 1.5.10-1.1

opensuse advisories openSUSE-SU-2024:10121-1

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-2014-8602 updated cvss 2.6

unbound: specially crafted request can lead to denial of service

  • Red Hat Enterprise Linux Client (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux Client Optional (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux ComputeNode (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux Server (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux Server Optional (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) unbound 1.4.20-26.el7, unbound-libs 1.4.20-26.el7, unbound-python 1.4.20-26.el7
    fixed: vendor fix RHSA-2015:2455

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

32.16% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Intel 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.