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CVE-2010-0211

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a...

9.8 CriticalPublic exploitFix available

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

28.5%Down 13.8 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
CVE-2010-0211
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-252
Updated
2026-11-02
CVE List No score

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
CVE-2010-0211
Updated
2026-11-02
EUVDEUVD-2010-0242 No score

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
EUVD-2010-0242
Updated
2026-11-03
GitHub AdvisoriesGHSA-m9h3-f3g9-fqrf 9.8

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a...

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
GHSA-m9h3-f3g9-fqrf
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-252
Updated
2026-11-02
OSV 9.8

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
CVE-2010-0211
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2010-0211 9.8

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Record
DEBIAN-CVE-2010-0211
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openldap
Debian:12
 before 2.4.23-1
2.4.23-1
openldap
Debian:13
 before 2.4.23-1
2.4.23-1
openldap
Debian:14
 before 2.4.23-1
2.4.23-1
openldap
Debian:5.0
From an advisory covering 2 CVEs
 before 2.4.11-1+lenny2, plus listed versions
2.4.11-12.4.11-1+lenny1
2.4.11-1+lenny2
openldap
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers-overlays
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers-sql
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
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Affected packages
PackageAffectedFixed
compat-openldap
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.3.43_2.2.29-12.el5_5.1
0:2.3.43_2.2.29-12.el5_5.1
openldap
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-clients
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
compat-openldap
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43_2.2.29-12.el5_5.1
0:2.3.43_2.2.29-12.el5_5.1
openldap
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-clients
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers-overlays
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
openldap-servers-sql
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.3.43-12.el5_5.1
0:2.3.43-12.el5_5.1
compat-openldap
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.1.30-12.el4_8.3
0:2.1.30-12.el4_8.3
openldap
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-clients
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers-sql
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
compat-openldap
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.1.30-12.el4_8.3
0:2.1.30-12.el4_8.3
openldap
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-clients
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers-sql
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
compat-openldap
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.1.30-12.el4_8.3
0:2.1.30-12.el4_8.3
openldap
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-clients
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers-sql
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
compat-openldap
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.1.30-12.el4_8.3
0:2.1.30-12.el4_8.3
openldap
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-clients
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3
openldap-servers-sql
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:2.2.13-12.el4_8.3
0:2.2.13-12.el4_8.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBOpenLDAP 2.4.22 - 'modrdn' Multiple Vulnerabilities2010-07-19

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-0211 is a critical vulnerability (CVSS 9.8) in Openldap, published July 27, 2010. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 28.5%, the 98th percentile. Fixed in openldap 2.4.23-1.

References

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