USN-4341-1: Samba vulnerabilities

28 April 2020

samba vulnerabilities

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

  • Ubuntu 20.04 LTS
  • Ubuntu 19.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

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)

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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References