Executive Summary

Summary
Title Samba vulnerabilities
Informations
Name USN-4217-1 First vendor Publication 2019-12-10
Vendor Ubuntu Last vendor Modification 2019-12-10
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Overall CVSS Score 5.4
Base Score 5.4 Environmental Score 5.4
impact SubScore 2.5 Temporal Score 5.4
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact Low
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

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

References:
https://usn.ubuntu.com/4217-1
CVE-2019-14861, CVE-2019-14870

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.10.7+dfsg-0ubuntu2.3
https://launchpad.net/ubuntu/+source/samba/2:4.10.0+dfsg-0ubuntu2.7
https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.14
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.24

Original Source

Url : http://www.ubuntu.com/usn/USN-4217-1

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-287 Improper Authentication
50 % CWE-276 Incorrect Default Permissions

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 371
Os 5
Os 2
Os 1

Alert History

If you want to see full details history, please login or register.
0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-03-19 13:20:12
  • First insertion