Sunday, May 2, 2021

Ubuntu Security Notice USN-4930-1

Ubuntu Security Notice USN-4930-1
April 29, 2021

samba vulnerability

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

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


Samba would allow unintended access to files over the network.

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


Peter Eriksson discovered that Samba incorrectly handled certain negative
idmap cache entries. This issue could result in certain users gaining
unauthorized access to files, contrary to expected behaviour.

Update instructions:

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

Ubuntu 21.04:
samba 2:4.13.3+dfsg-1ubuntu2.1

Ubuntu 20.10:
samba 2:4.12.5+dfsg-3ubuntu4.3

Ubuntu 20.04 LTS:
samba 2:4.11.6+dfsg-0ubuntu1.8

Ubuntu 18.04 LTS:
samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.23

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.34

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


Package Information:


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