CVE-2011-4079 Information

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.

Reference

http://secunia.com/advisories/46599 http://security.gentoo.org/glsa/glsa-201406-36.xml http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commitdiff;h=507238713b71208ec4f262f312cb495a302df9e9 http://www.openldap.org/its/index.cgi/Software20Bugs?id=7059;selectid=7059 http://www.openwall.com/lists/oss-security/2011/10/26/5 http://www.openwall.com/lists/oss-security/2011/10/26/9 http://www.securityfocus.com/bid/50384 http://www.ubuntu.com/usn/USN-1266-1 https://bugzilla.redhat.com/show_bug.cgi?id=749324 https://exchange.xforce.ibmcloud.com/vulnerabilities/70991