LDB could be made to crash if it received specially crafted network traffic.
It was discovered that LDB incorrectly handled certain search expressions. A remote attacker could possibly use this issue to cause the Samba LDAP process to crash, resulting in a denial of service.
26 February 2019
A security issue affects these releases of Ubuntu and its derivatives:
LDB could be made to crash if it received specially crafted network traffic.
It was discovered that LDB incorrectly handled certain search expressions. A remote attacker could possibly use this issue to cause the Samba LDAP process to crash, resulting in a denial of service.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.
Vulmon