USN-2622-1: OpenLDAP vulnerabilities

Ubuntu Security Notice USN-2622-1

26th May, 2015

openldap vulnerabilities

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

• Ubuntu 15.04
• Ubuntu 14.10
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

OpenLDAP could be made to crash if it received specially crafted network traffic.

Software description

• openldap - OpenLDAP utilities

Details

It was discovered that OpenLDAP incorrectly handled certain search queries
that returned empty attributes. A remote attacker could use this issue to
cause OpenLDAP to assert, resulting in a denial of service. This issue only
affected Ubuntu 12.04 LTS. (CVE-2012-1164)

Michael Vishchers discovered that OpenLDAP improperly counted references
when the rwm overlay was used. A remote attacker could use this issue to
cause OpenLDAP to crash, resulting in a denial of service. (CVE-2013-4449)

It was discovered that OpenLDAP incorrectly handled certain empty attribute
lists in search requests. A remote attacker could use this issue to cause
OpenLDAP to crash, resulting in a denial of service. (CVE-2015-1545)

Update instructions

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

Ubuntu 15.04:

slapd 2.4.31-1+nmu2ubuntu12.1

Ubuntu 14.10:

slapd 2.4.31-1+nmu2ubuntu11.1

Ubuntu 14.04 LTS:

slapd 2.4.31-1+nmu2ubuntu8.1

Ubuntu 12.04 LTS:

slapd 2.4.28-1.1ubuntu4.5

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2012-1164, CVE-2013-4449, CVE-2015-1545

from Ubuntu Security Notices http://ift.tt/1FBNv29