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Fencer Vulns
high 7.1

CVE-2007-5707 json

OpenLDAP before 2.3.39 allows remote attackers to cause a denial of service (slapd crash) via an LDAP request with a malformed objectClasse…

published 2007-10-30 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-5679

cvss
7.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

OpenLDAP before 2.3.39 allows remote attackers to cause a denial of service (slapd crash) via an LDAP request with a malformed objectClasses attribute. NOTE: this has been reported as a double free, but the reports are inconsistent.

Patch / fix

  • openldap RHEL 4 2.2.13-8.el4_6.1
  • compat-openldap RHEL 4 2.1.30-8.el4_6.1
  • openldap-clients RHEL 4 2.2.13-8.el4_6.1
  • openldap-servers RHEL 4 2.2.13-8.el4_6.1
  • openldap-servers-sql RHEL 4 2.2.13-8.el4_6.1
  • openldap RHEL 5 2.3.27-8.el5_1.1
  • compat-openldap RHEL 5 2.3.27_2.2.29-8.el5_1.1
  • openldap-clients RHEL 5 2.3.27-8.el5_1.1

red hat advisories RHSA-2007:1038RHSA-2007:1037

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-2007-5707 updated

openldap slapd DoS via objectClasses attribute

  • Red Hat Enterprise Linux (v. 5 server) openldap 2.3.27-8.el5_1.1, openldap-clients 2.3.27-8.el5_1.1, openldap-servers 2.3.27-8.el5_1.1, openldap-servers-sql 2.3.27-8.el5_1.1, compat-openldap 2.3.27_2.2.29-8.el5_1.1
    fixed: vendor fix RHSA-2007:1037
  • Red Hat Enterprise Linux AS version 4 openldap 2.2.13-8.el4_6.1, compat-openldap 2.1.30-8.el4_6.1, openldap-clients 2.2.13-8.el4_6.1, openldap-servers 2.2.13-8.el4_6.1, openldap-servers-sql 2.2.13-8.el4_6.1
    fixed: vendor fix RHSA-2007:1038
  • Red Hat Enterprise Linux Desktop (v. 5 client) openldap 2.3.27-8.el5_1.1, openldap-clients 2.3.27-8.el5_1.1, openldap-servers 2.3.27-8.el5_1.1, openldap-servers-sql 2.3.27-8.el5_1.1, compat-openldap 2.3.27_2.2.29-8.el5_1.1
    fixed: vendor fix RHSA-2007:1037
  • Red Hat Enterprise Linux Desktop version 4 openldap 2.2.13-8.el4_6.1, compat-openldap 2.1.30-8.el4_6.1, openldap-clients 2.2.13-8.el4_6.1, openldap-servers 2.2.13-8.el4_6.1, openldap-servers-sql 2.2.13-8.el4_6.1
    fixed: vendor fix RHSA-2007:1038
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openldap 2.3.27-8.el5_1.1, openldap-clients 2.3.27-8.el5_1.1, openldap-servers 2.3.27-8.el5_1.1, openldap-servers-sql 2.3.27-8.el5_1.1, compat-openldap 2.3.27_2.2.29-8.el5_1.1
    fixed: vendor fix RHSA-2007:1037
  • Red Hat Enterprise Linux ES version 4 openldap 2.2.13-8.el4_6.1, compat-openldap 2.1.30-8.el4_6.1, openldap-clients 2.2.13-8.el4_6.1, openldap-servers 2.2.13-8.el4_6.1, openldap-servers-sql 2.2.13-8.el4_6.1 Red Hat Enterprise Linux WS version 4 openldap 2.2.13-8.el4_6.1, compat-openldap 2.1.30-8.el4_6.1, openldap-clients 2.2.13-8.el4_6.1, openldap-servers 2.2.13-8.el4_6.1, openldap-servers-sql 2.2.13-8.el4_6.1
    fixed: vendor fix RHSA-2007:1038

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

3.65% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-399 Resource Management Errors

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.