samba vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 19.04
- 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
Andreas Oster discovered that the Samba DNS management server incorrectly
handled certain records. An authenticated attacker could possibly use this
issue to crash Samba, resulting in a denial of service. (CVE-2019-14861)
Isaac Boukris discovered that Samba did not enforce the Kerberos
DelegationNotAllowed feature restriction, contrary to expectations.
(CVE-2019-14870)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- libsmbclient - 2:4.10.7+dfsg-0ubuntu2.3
- samba - 2:4.10.7+dfsg-0ubuntu2.3
- Ubuntu 19.04
- libsmbclient - 2:4.10.0+dfsg-0ubuntu2.7
- samba - 2:4.10.0+dfsg-0ubuntu2.7
- Ubuntu 18.04 LTS
- libsmbclient - 2:4.7.6+dfsg~ubuntu-0ubuntu2.14
- samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.14
- Ubuntu 16.04 LTS
- libsmbclient - 2:4.3.11+dfsg-0ubuntu0.16.04.24
- samba - 2:4.3.11+dfsg-0ubuntu0.16.04.24
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.