National Cyber Awareness System

Vulnerability Summary for CVE-2011-4079

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: https://bugzilla.redhat.com/show_bug.cgi?id=749324

Type: Patch Information

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=749324

External Source: MISC

Name: http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commitdiff;h=507238713b71208ec4f262f312cb495a302df9e9

Type: Patch Information

Hyperlink:http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commitdiff;h=507238713b71208ec4f262f312cb495a302df9e9

External Source: XF

Name: openldap-utf8stringnormalize-dos(70991)

Hyperlink:http://xforce.iss.net/xforce/xfdb/70991

External Source: UBUNTU

Name: USN-1266-1

Hyperlink:http://www.ubuntu.com/usn/USN-1266-1

External Source: BID

Name: 50384

Hyperlink:http://www.securityfocus.com/bid/50384

External Source: MLIST

Name: [oss-security] 20111026 Re: CVE Request: openldap2 UTF8StringNormalize() can cause a (one-byte) buffer overflow

Hyperlink:http://www.openwall.com/lists/oss-security/2011/10/26/9

External Source: MLIST

Name: [oss-security] 20111026 CVE Request: openldap2 UTF8StringNormalize() can cause a (one-byte) buffer overflow

Hyperlink:http://www.openwall.com/lists/oss-security/2011/10/26/5

External Source: MISC

Name: http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059;selectid=7059

Hyperlink:http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059;selectid=7059

External Source: SECUNIA

Name: 46599

Type: Advisory

Hyperlink:http://secunia.com/advisories/46599