Executive Summary

Summary
Title Samba vulnerabilities
Informations
NameUSN-4167-1First vendor Publication2019-10-29
VendorUbuntuLast vendor Modification2019-10-29
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreN/AAttack RangeN/A
Cvss Impact ScoreN/AAttack ComplexityN/A
Cvss Expoit ScoreN/AAuthenticationN/A
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:

Michael Hanselmann discovered that the Samba client code incorrectly handled path separators. If a user were tricked into connecting to a malicious server, a remote attacker could use this issue to cause the client to access local pathnames instead of network pathnames. (CVE-2019-10218)

Simon Fonteneau and Björn Baumbach discovered that Samba incorrectly handled the check password script. This issue could possibly bypass custom password complexity checks, contrary to expectations. This issue only affected Ubuntu 18.04 LTS, Ubuntu 19.04, and Ubuntu 19.10. (CVE-2019-14833)

Adam Xu discovered that Samba incorrectly handled the dirsync LDAP control. A remote attacker with "get changes" permissions could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2019-14847)

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-0ubuntu2.2
samba 2:4.10.7+dfsg-0ubuntu2.2

Ubuntu 19.04:
libsmbclient 2:4.10.0+dfsg-0ubuntu2.6
samba 2:4.10.0+dfsg-0ubuntu2.6

Ubuntu 18.04 LTS:
libsmbclient 2:4.7.6+dfsg~ubuntu-0ubuntu2.13
samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.13

Ubuntu 16.04 LTS:
libsmbclient 2:4.3.11+dfsg-0ubuntu0.16.04.23
samba 2:4.3.11+dfsg-0ubuntu0.16.04.23

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

References:
https://usn.ubuntu.com/4167-1
CVE-2019-10218, CVE-2019-14833, CVE-2019-14847

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.10.7+dfsg-0ubuntu2.2
https://launchpad.net/ubuntu/+source/samba/2:4.10.0+dfsg-0ubuntu2.6
https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.13
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.23

Original Source

Url : http://www.ubuntu.com/usn/USN-4167-1

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0
DateInformations
2019-10-29 17:19:12
  • First insertion