[USN-1266-1] OpenLDAP vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2011-11-20T00:00:00


========================================================================== Ubuntu Security Notice USN-1266-1 November 17, 2011

openldap vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS


An OpenLDAP server could potentially be made to crash if it received specially crafted network traffic from an authenticated user.

Software Description: - openldap: OpenLDAP utilities


It was discovered that slapd contained an off-by-one error. An authenticated attacker could potentially exploit this by sending a crafted crafted LDIF entry containing an empty postalAddress.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.10: slapd 2.4.25-1.1ubuntu4.1

Ubuntu 11.04: slapd 2.4.23-6ubuntu6.1

Ubuntu 10.10: slapd 2.4.23-0ubuntu3.7

Ubuntu 10.04 LTS: slapd 2.4.21-0ubuntu5.6

In general, a standard system update will make all the necessary changes.

References: http://www.ubuntu.com/usn/usn-1266-1 CVE-2011-4079

Package Information: https://launchpad.net/ubuntu/+source/openldap/2.4.25-1.1ubuntu4.1 https://launchpad.net/ubuntu/+source/openldap/2.4.23-6ubuntu6.1 https://launchpad.net/ubuntu/+source/openldap/2.4.23-0ubuntu3.7 https://launchpad.net/ubuntu/+source/openldap/2.4.21-0ubuntu5.6