==========================================================================
Ubuntu Security Notice USN-4634-1
November 17, 2020
openldap vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.10
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
Summary:
OpenLDAP could be made to crash if it received specially crafted network
traffic.
Software Description:
– openldap: Lightweight Directory Access Protocol
Details:
It was discovered that OpenLDAP incorrectly handled certain malformed
inputs. A remote attacker could possibly use this issue to cause OpenLDAP
to crash, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
slapd 2.4.53+dfsg-1ubuntu1.2
Ubuntu 20.04 LTS:
slapd 2.4.49+dfsg-2ubuntu1.5
Ubuntu 18.04 LTS:
slapd 2.4.45+dfsg-1ubuntu1.8
Ubuntu 16.04 LTS:
slapd 2.4.42+dfsg-2ubuntu3.11
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4634-1
CVE-2020-25709, CVE-2020-25710
Package Information:
https://launchpad.net/ubuntu/+source/openldap/2.4.53+dfsg-1ubuntu1.2
https://launchpad.net/ubuntu/+source/openldap/2.4.49+dfsg-2ubuntu1.5
https://launchpad.net/ubuntu/+source/openldap/2.4.45+dfsg-1ubuntu1.8
https://launchpad.net/ubuntu/+source/openldap/2.4.42+dfsg-2ubuntu3.11
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