Ubuntu Security Notice 4078-1 - It was discovered that OpenLDAP incorrectly handled rootDN delegation. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations. It was discovered that OpenLDAP incorrectly handled SASL authentication and session encryption. After a first SASL bind was completed, it was possible to obtain access by performing simple binds, contrary to expectations. Various other issues were also addressed.
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Ubuntu Security Notice USN-4078-1
July 30, 2019
openldap vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in OpenLDAP.
Software Description:
- openldap: OpenLDAP utilities
Details:
It was discovered that OpenLDAP incorrectly handled rootDN delegation. A
database administrator could use this issue to request authorization as an
identity from another database, contrary to expectations. (CVE-2019-13057)
It was discovered that OpenLDAP incorrectly handled SASL authentication and
session encryption. After a first SASL bind was completed, it was possible
to obtain access by performing simple binds, contrary to expectations.
(CVE-2019-13565)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.04:
slapd 2.4.47+dfsg-3ubuntu2.1
Ubuntu 18.04 LTS:
slapd 2.4.45+dfsg-1ubuntu1.3
Ubuntu 16.04 LTS:
slapd 2.4.42+dfsg-2ubuntu3.6
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4078-1
CVE-2019-13057, CVE-2019-13565
Package Information:
https://launchpad.net/ubuntu/+source/openldap/2.4.47+dfsg-3ubuntu2.1
https://launchpad.net/ubuntu/+source/openldap/2.4.45+dfsg-1ubuntu1.3
https://launchpad.net/ubuntu/+source/openldap/2.4.42+dfsg-2ubuntu3.6