USN-3827-1: Samba vulnerabilities

USN-3827-1: Samba vulnerabilities

samba vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Samba.

Software Description

  • samba – SMB/CIFS file, print, and login server for Unix

Details

Florian Stuelpner discovered that Samba incorrectly handled CNAME records.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service. (CVE-2018-14629)

Alex MacCuish discovered that Samba incorrectly handled memory when
configured to accept smart-card authentication. A remote attacker could
possibly use this issue to cause Samba to crash, resulting in a denial of
service. (CVE-2018-16841)

Garming Sam discovered that Samba incorrectly handled memory when
processing LDAP searches. A remote attacker could possibly use this issue
to cause Samba to crash, resulting in a denial of service. (CVE-2018-16851)

Update instructions

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

Ubuntu 18.10
samba2:4.8.4+dfsg-2ubuntu2.1
Ubuntu 18.04 LTS
samba2:4.7.6+dfsg~ubuntu-0ubuntu2.5
Ubuntu 16.04 LTS
samba2:4.3.11+dfsg-0ubuntu0.16.04.18
Ubuntu 14.04 LTS
samba2:4.3.11+dfsg-0ubuntu0.14.04.19

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.

References

Source: USN-3827-1: Samba vulnerabilities

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