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Ubuntu Security Notice USN-4217-2
December 11, 2019
samba vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in Samba.
Software Description:
– samba: SMB/CIFS file, print, and login server for Unix
Details:
USN-4217-1 fixed several vulnerabilities in Samba. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory 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 14.04 ESM:
libsmbclient 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
samba 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4217-2
https://usn.ubuntu.com/4217-1
CVE-2019-14861, CVE-2019-14870
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