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Ubuntu Security Notice USN-3577-1

Ubuntu Security Notice USN-3577-1
Posted Feb 20, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3577-1 - Jann Horn discovered that CUPS permitted HTTP requests with the Host header set to "localhost.localdomain" from the loopback interface. If a user were tricked in to opening a specially crafted website in their web browser, an attacker could potentially exploit this to obtain sensitive information or control printers, via a DNS rebinding attack.

tags | advisory, web
systems | linux, ubuntu
advisories | CVE-2017-18190
MD5 | 73e8a98550dd664c32df48cec1e47b6c

Ubuntu Security Notice USN-3577-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3577-1
February 21, 2018

cups vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

CUPS could be made to provide access to printers over the network.

Software Description:
- cups: Common UNIX Printing System(tm)

Details:

Jann Horn discovered that CUPS permitted HTTP requests with the Host
header set to "localhost.localdomain" from the loopback interface. If a
user were tricked in to opening a specially crafted website in their web
browser, an attacker could potentially exploit this to obtain sensitive
information or control printers, via a DNS rebinding attack.
(CVE-2017-18190)

Update instructions:

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

Ubuntu 16.04 LTS:
cups 2.1.3-4ubuntu0.4

Ubuntu 14.04 LTS:
cups 1.7.2-0ubuntu1.9

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

References:
https://www.ubuntu.com/usn/usn-3577-1
CVE-2017-18190

Package Information:
https://launchpad.net/ubuntu/+source/cups/2.1.3-4ubuntu0.4
https://launchpad.net/ubuntu/+source/cups/1.7.2-0ubuntu1.9


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