Ubuntu 20.04 LTS Advisory 4341-1: Samba Denial Of Service Risks

ubuntu

April 28, 2020

Several security issues were fixed in Samba.

Summary

Several security issues were fixed in Samba.

Software Description:

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

Details:

Andrei Popa discovered that Samba incorrectly handled certain LDAP queries.

A remote attacker could use this issue to cause Samba to crash, resulting

in a denial of service, or possibly execute arbitrary code. This issue only

affected Ubuntu 19.10 and Ubuntu 20.04 LTS. (CVE-2020-10700)

It was discovered that Samba incorrectly handled certain LDAP queries. A

remote attacker could possibly use this issue to cause Samba to consume

resources, resulting in a denial of service. (CVE-2020-10704)

Topics Covered

security advisory denial of service remote exploit samba Ubuntu

Update Instructions

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

Ubuntu 20.04 LTS:
  samba                           2:4.11.6+dfsg-0ubuntu1.1

Ubuntu 19.10:
  samba                           2:4.10.7+dfsg-0ubuntu2.5

Ubuntu 18.04 LTS:
  samba                           2:4.7.6+dfsg~ubuntu-0ubuntu2.16

Ubuntu 16.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.26

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