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Fencer Intel
medium 4.3

CVE-2013-4449 json

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial…

published 12y ago modified 4mo ago also EUVD-2013-4320

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.9%
EPSS 10.9% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search.

Patch / fix

  • openldap Debian 14, Debian 13, Debian 12 2.4.39-1.1

debian advisories DEBIAN-CVE-2013-4449

  • openldap Ubuntu 14.04 LTS 2.4.31-1+nmu2ubuntu8.1

ubuntu advisories UBUNTU-CVE-2013-4449

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

  • openldap RHEL 5 2.3.43-27.el5_10
  • compat-openldap RHEL 5 2.3.43_2.2.29-27.el5_10
  • openldap-clients RHEL 5 2.3.43-27.el5_10
  • openldap-servers RHEL 5 2.3.43-27.el5_10
  • openldap-servers-sql RHEL 5 2.3.43-27.el5_10
  • openldap-servers-overlays RHEL 5 2.3.43-27.el5_10
  • openldap RHEL 6 2.4.23-34.el6_5.1
  • openldap-clients RHEL 6 2.4.23-34.el6_5.1

red hat advisories RHSA-2014:0206RHSA-2014:0126

Is CVE-2013-4449 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2013-4449 updated cvss 4.3

openldap: segfault on certain queries with rwm overlay

  • Red Hat Enterprise Linux (v. 5 server) openldap 2.3.43-27.el5_10, openldap-clients 2.3.43-27.el5_10, openldap-servers 2.3.43-27.el5_10, openldap-servers-sql 2.3.43-27.el5_10, compat-openldap 2.3.43_2.2.29-27.el5_10, openldap-servers-overlays 2.3.43-27.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) openldap 2.3.43-27.el5_10, openldap-clients 2.3.43-27.el5_10, compat-openldap 2.3.43_2.2.29-27.el5_10
    fixed: vendor fix RHSA-2014:0206
  • Red Hat Enterprise Linux Desktop (v. 6) openldap 2.4.23-34.el6_5.1, openldap-clients 2.4.23-34.el6_5.1 Red Hat Enterprise Linux Desktop Optional (v. 6) openldap 2.4.23-34.el6_5.1, openldap-servers 2.4.23-34.el6_5.1, openldap-servers-sql 2.4.23-34.el6_5.1
    fixed: vendor fix RHSA-2014:0126
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openldap 2.3.43-27.el5_10, openldap-servers 2.3.43-27.el5_10, openldap-servers-sql 2.3.43-27.el5_10, openldap-servers-overlays 2.3.43-27.el5_10
    fixed: vendor fix RHSA-2014:0206
  • Red Hat Enterprise Linux HPC Node (v. 6) openldap 2.4.23-34.el6_5.1, openldap-clients 2.4.23-34.el6_5.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) openldap 2.4.23-34.el6_5.1, openldap-servers 2.4.23-34.el6_5.1, openldap-servers-sql 2.4.23-34.el6_5.1 Red Hat Enterprise Linux Server (v. 6) openldap 2.4.23-34.el6_5.1, openldap-clients 2.4.23-34.el6_5.1, openldap-servers 2.4.23-34.el6_5.1 Red Hat Enterprise Linux Server Optional (v. 6) openldap 2.4.23-34.el6_5.1, openldap-servers-sql 2.4.23-34.el6_5.1 Red Hat Enterprise Linux Workstation (v. 6) openldap 2.4.23-34.el6_5.1, openldap-clients 2.4.23-34.el6_5.1, openldap-servers 2.4.23-34.el6_5.1 Red Hat Enterprise Linux Workstation Optional (v. 6) openldap 2.4.23-34.el6_5.1, openldap-servers-sql 2.4.23-34.el6_5.1
    fixed: vendor fix RHSA-2014:0126
  • Red Hat Enterprise Linux 7 openldap, openldap-clients, openldap-servers, openldap-servers-sql
    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

10.91% chance of exploitation in the next 30 days, higher than 95% 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

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.