USN-2622-1: OpenLDAP vulnerabilities

Releases

• Ubuntu 15.04
• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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 versions:

Ubuntu 15.04

• slapd - 2.4.31-1+nmu2ubuntu12.1

Ubuntu 14.10

• slapd - 2.4.31-1+nmu2ubuntu11.1

Ubuntu 14.04

• slapd - 2.4.31-1+nmu2ubuntu8.1

Ubuntu 12.04

• slapd - 2.4.28-1.1ubuntu4.5

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

References

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