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Fencer Intel
medium 5.3

CVE-2015-3223 json

The ldb_wildcard_compare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x befo…

published 2015-12-29 10 y ago modified 2026-06-17 4 mo ago also EUVD-2015-3283

cvss
5.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

The ldb_wildcard_compare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles certain zero values, which allows remote attackers to cause a denial of service (infinite loop) via crafted packets.

Patch / fix

  • samba Debian 14, Debian 13, Debian 12 2:4.1.22+dfsg-1

debian advisories DEBIAN-CVE-2015-3223

  • ldb Ubuntu 14.04 LTS 1:1.1.16-1ubuntu0.1
  • ldb Ubuntu 16.04 LTS 2:1.1.24-1ubuntu1
  • samba Ubuntu 14.04 LTS 2:4.1.6+dfsg-1ubuntu2.14.04.11
  • samba Ubuntu 16.04 LTS 2:4.3.3+dfsg-1ubuntu1

ubuntu advisories UBUNTU-CVE-2015-3223

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

  • libldb storage 3.1 1.1.20-3.el6rhs
  • libldb storage 3.1 1.1.20-3.el7rhgs
  • pyldb storage 3.1 1.1.20-3.el6rhs
  • pyldb storage 3.1 1.1.20-3.el7rhgs
  • ldb-tools storage 3.1 1.1.20-3.el6rhs
  • ldb-tools storage 3.1 1.1.20-3.el7rhgs
  • libldb RHEL 6 1.1.13-3.el6_7.1
  • libldb RHEL 7 1.1.20-1.el7_2.2

red hat advisories RHSA-2016:0014RHSA-2016:0009

  • tevent SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 0.9.26-4.1
  • ldb SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 1.1.24-4.1
  • tdb SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 1.3.8-4.1
  • samba SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 4.2.4-6.1
  • talloc SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 2.1.5-4.1
  • tevent SLES for SAP 12, SLES 12, SLED 12 +1 more 0.9.26-3.3.1
  • ldb SLES for SAP 12, SLES 12, SLED 12 +1 more 1.1.24-4.3.1
  • tdb SLES for SAP 12, SLES 12, SLED 12 +1 more 1.3.8-2.3.1

suse advisories SUSE-SU-2015:2305-1SUSE-SU-2015:2304-1

  • samba openSUSE Tumbleweed 4.5.0-1.1
  • ldb openSUSE Tumbleweed 1.1.27-1.1

opensuse advisories openSUSE-SU-2024:10069-1openSUSE-SU-2024:10074-1

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-2015-3223 updated cvss 5.0

libldb: Remote DoS in Samba (AD) LDAP server

  • Red Hat Enterprise Linux 5 libldb
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) libldb 1.1.20-1.el7_2.2 Red Hat Enterprise Linux Client Optional (v. 7) pyldb 1.1.20-1.el7_2.2, ldb-tools 1.1.20-1.el7_2.2 Red Hat Enterprise Linux ComputeNode (v. 7) libldb 1.1.20-1.el7_2.2 Red Hat Enterprise Linux ComputeNode Optional (v. 7) pyldb 1.1.20-1.el7_2.2, ldb-tools 1.1.20-1.el7_2.2 Red Hat Enterprise Linux Desktop (v. 6) pyldb 1.1.13-3.el6_7.1, libldb 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Desktop Optional (v. 6) ldb-tools 1.1.13-3.el6_7.1
    +10 more products
    Red Hat Enterprise Linux HPC Node (v. 6) pyldb 1.1.13-3.el6_7.1, libldb 1.1.13-3.el6_7.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) ldb-tools 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Server (v. 6) pyldb 1.1.13-3.el6_7.1, libldb 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Server (v. 7) pyldb 1.1.20-1.el7_2.2, libldb 1.1.20-1.el7_2.2 Red Hat Enterprise Linux Server Optional (v. 6) ldb-tools 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Server Optional (v. 7) pyldb 1.1.20-1.el7_2.2, ldb-tools 1.1.20-1.el7_2.2 Red Hat Enterprise Linux Workstation (v. 6) pyldb 1.1.13-3.el6_7.1, libldb 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Workstation (v. 7) pyldb 1.1.20-1.el7_2.2, libldb 1.1.20-1.el7_2.2 Red Hat Enterprise Linux Workstation Optional (v. 6) ldb-tools 1.1.13-3.el6_7.1 Red Hat Enterprise Linux Workstation Optional (v. 7) ldb-tools 1.1.20-1.el7_2.2
    fixed: vendor fix RHSA-2016:0009
  • Red Hat Gluster 3 Samba on RHEL-7 pyldb 1.1.20-3.el7rhgs, libldb 1.1.20-3.el7rhgs, ldb-tools 1.1.20-3.el7rhgs Red Hat Gluster Storage Server 3.1 on RHEL-6 pyldb 1.1.20-3.el6rhs, libldb 1.1.20-3.el6rhs, ldb-tools 1.1.20-3.el6rhs
    fixed: vendor fix RHSA-2016:0014

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

6.94% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

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.