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Fencer Vulns
medium 6.5

CVE-2018-14629 json

A denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3.

published 2018-11-28 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6535

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.2%
EPSS 5.2% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

A denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3. A CNAME loop could lead to infinite recursion in the server. An unprivileged local attacker could create such an entry, leading to denial of service.

Patch / fix

  • samba samba 4.7.12, 4.8.7, 4.9.3
  • samba Debian 14, Debian 13, Debian 12 2:4.9.2+dfsg-2

debian advisories DEBIAN-CVE-2018-14629

  • samba Ubuntu 14.04 LTS 2:4.3.11+dfsg-0ubuntu0.14.04.19
  • samba Ubuntu 16.04 LTS 2:4.3.11+dfsg-0ubuntu0.16.04.18
  • samba Ubuntu 18.04 LTS 2:4.7.6+dfsg~ubuntu-0ubuntu2.5

ubuntu advisories UBUNTU-CVE-2018-14629

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

  • samba SLE Module for Package Hub 15, SLE Module for Basesystem 15, SLE High Availability Extension 15 4.7.11+git.140.6bd0e5b30d8-4.21.1

suse advisories SUSE-SU-2018:4066-1

  • samba openSUSE Tumbleweed 4.14.6+git.182.2205d5224e3-1.1

opensuse advisories openSUSE-SU-2024:11365-1

  • samba Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 4.8.11-r0
  • samba Alpine 3.6 4.6.16-r2
  • samba Alpine 3.7 4.7.6-r2

alpine advisories ALPINE-CVE-2018-14629

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • samba Arch Linux 4.9.3-1

arch linux advisories AVG-823

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-2018-14629 updated cvss 6.5

samba: Unprivileged adding of CNAME record causing loop in AD LDAP server

  • Red Hat Enterprise Linux 5 samba, samba3x Red Hat Enterprise Linux 6 samba, samba4, samba4-dc, samba-swat, samba4-libs, samba4-pidl, +17 more Red Hat Enterprise Linux 7 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +18 more Red Hat Enterprise Linux 8 ctdb, samba, libnetapi, ctdb-tests, samba-libs, samba-pidl, +24 more Red Hat Storage 3 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +21 more Red Hat Virtualization 4 samba
    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

5.19% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14629 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • [UNKNOWN] samba

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-835 Loop with Unreachable Exit Condition

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.