CVE-2011-4079

OpenLDAP < 2.4.26 - Denial of Service via UTF8StringNormalize Heap Overflow

Title source: llm
STIX 2.1

Description

Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.

References (10)

Core 10
Core References
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-201406-36.xml
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/10/26/5
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1266-1
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/46599
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/50384
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/70991
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/10/26/9

Scores

EPSS 0.0371
EPSS Percentile 88.6%

Details

CWE
CWE-189
Status published
Products (50)
openldap/openldap 1.0
openldap/openldap 1.0.1
openldap/openldap 1.0.2
openldap/openldap 1.0.3
openldap/openldap 1.1
openldap/openldap 1.1.0
openldap/openldap 1.1.1
openldap/openldap 1.1.2
openldap/openldap 1.1.3
openldap/openldap 1.1.4
... and 40 more
Published Oct 27, 2011
Tracked Since Feb 18, 2026