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Ubuntu Security Notice USN-4018-1
June 19, 2019

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

- Ubuntu 19.04

Summary:

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

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix

Details:

It was discovered that Samba incorrectly handled certain RPC messages. A
remote attacker could possibly use this issue to cause Samba to crash,
resulting in a denial of service. (CVE-2019-12435)

It was discovered that Samba incorrectly handled LDAP pages searches. A
remote attacker could possibly use this issue to cause Samba to crash,
resulting in a denial of service. (CVE-2019-12436)

Update instructions:

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

Ubuntu 19.04:
  samba                           2:4.10.0+dfsg-0ubuntu2.2

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

References:
  https://usn.ubuntu.com/4018-1
  CVE-2019-12435, CVE-2019-12436

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.10.0+dfsg-0ubuntu2.2