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Fencer Intel
medium 5.0

CVE-2010-0212 json

OpenLDAP 2.4.22 allows remote attackers to cause a denial of service (crash) via a modrdn call with a zero-length RDN destination string, w…

published 16y ago modified 4mo ago also EUVD-2010-0243

cvss
5.0
version 2.0, NVD
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

OpenLDAP 2.4.22 allows remote attackers to cause a denial of service (crash) via a modrdn call with a zero-length RDN destination string, which is not properly handled by the smr_normalize function and triggers a NULL pointer dereference in the IA5StringNormalize function in schema_init.c, as demonstrated using the Codenomicon LDAPv3 test suite.

Patch / fix

  • openldap Debian 14, Debian 13, Debian 12 2.4.23-1

debian advisories DEBIAN-CVE-2010-0212

  • openldap RHEL 5 2.3.43-12.el5_5.1
  • compat-openldap RHEL 5 2.3.43_2.2.29-12.el5_5.1
  • openldap-clients RHEL 5 2.3.43-12.el5_5.1
  • openldap-servers RHEL 5 2.3.43-12.el5_5.1
  • openldap-servers-sql RHEL 5 2.3.43-12.el5_5.1
  • openldap-servers-overlays RHEL 5 2.3.43-12.el5_5.1

red hat advisories RHSA-2010:0542

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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-2010-0212 updated cvss 3.5

openldap: modrdn processing IA5StringNormalize NULL pointer dereference

  • Red Hat Enterprise Linux 4 openldap
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5 server) openldap 2.3.43-12.el5_5.1, openldap-clients 2.3.43-12.el5_5.1, openldap-servers 2.3.43-12.el5_5.1, openldap-servers-sql 2.3.43-12.el5_5.1, compat-openldap 2.3.43_2.2.29-12.el5_5.1, openldap-servers-overlays 2.3.43-12.el5_5.1 Red Hat Enterprise Linux Desktop (v. 5 client) openldap 2.3.43-12.el5_5.1, openldap-clients 2.3.43-12.el5_5.1, compat-openldap 2.3.43_2.2.29-12.el5_5.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openldap 2.3.43-12.el5_5.1, openldap-servers 2.3.43-12.el5_5.1, openldap-servers-sql 2.3.43-12.el5_5.1, openldap-servers-overlays 2.3.43-12.el5_5.1
    fixed: vendor fix RHSA-2010:0542
  • Red Hat Enterprise Linux 6 openldap, compat-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

5.20% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • securityfocus.com http://www.securityfocus.com/bid/41770 referenced PoC, tagged "exploit" by a source, unverified
  • openldap.org http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6570 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

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.