Ubuntu 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : openldap, openldap2.3 vulnerabilities (USN-1100-1)

Ubuntu Security Notice (C) 2011-2014 Canonical, Inc. / NASL script (C) 2011-2014 Tenable Network Security, Inc.

Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

It was discovered that OpenLDAP did not properly check forwarded
authentication failures when using a slave server and chain overlay.
If OpenLDAP were configured in this manner, an attacker could bypass
authentication checks by sending an invalid password to a slave
server. (CVE-2011-1024)

It was discovered that OpenLDAP did not properly perform
authentication checks to the rootdn when using the back-ndb backend.
An attacker could exploit this to access the directory by sending an
arbitrary password. Ubuntu does not ship OpenLDAP with back-ndb
support by default. This issue did not affect Ubuntu 8.04 LTS.

It was discovered that OpenLDAP did not properly validate modrdn
requests. An unauthenticated remote user could use this to cause a
denial of service via application crash. (CVE-2011-1081).

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
CVSS Temporal Score : 5.9
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 53257 ()

Bugtraq ID: 46363

CVE ID: CVE-2011-1024