Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

                     Ubuntu releases Firefox 59 update
                               9 April 2018


        AusCERT Security Bulletin Summary

Product:           firefox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Increased Privileges            -- Remote with User Interaction
                   Cross-site Scripting            -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
                   Read-only Data Access           -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-5143 CVE-2018-5142 CVE-2018-5141
                   CVE-2018-5140 CVE-2018-5137 CVE-2018-5136
                   CVE-2018-5135 CVE-2018-5134 CVE-2018-5133
                   CVE-2018-5132 CVE-2018-5131 CVE-2018-5130
                   CVE-2018-5129 CVE-2018-5128 CVE-2018-5127
                   CVE-2018-5126 CVE-2018-5125 

Reference:         ASB-2018.0057

Original Bulletin: 

Revision History:  April  9 2018: USN-3596-1 caused a regression in Firefox.
                   March 15 2018: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

Ubuntu Security Notice USN-3596-2
April 06, 2018

firefox regression

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

- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS


USN-3596-1 caused a regression in Firefox.

Software Description:
- - firefox: Mozilla Open Source web browser


USN-3596-1 fixed vulnerabilities in Firefox. The update caused an issue
where it was not possible to customize the toolbars when running Firefox
in Unity. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 Multiple security issues were discovered in Firefox. If a user were
 tricked in to opening a specially crafted website, an attacker could
 potentially exploit these to cause a denial of service via application
 crash or opening new tabs, escape the sandbox, bypass same-origin
 restrictions, obtain sensitive information, confuse the user with
 misleading permission requests, or execute arbitrary code. (CVE-2018-5125,
 CVE-2018-5126, CVE-2018-5127, CVE-2018-5128, CVE-2018-5129, CVE-2018-5130,
 CVE-2018-5136, CVE-2018-5137, CVE-2018-5140, CVE-2018-5141, CVE-2018-5142)
 It was discovered that the fetch() API could incorrectly return cached
 copies of no-store/no-cache resources in some circumstances. A local
 attacker could potentially exploit this to obtain sensitive information in
 environments where multiple users share a common profile. (CVE-2018-5131)
 Multiple security issues were discovered with WebExtensions. If a user
 were tricked in to installing a specially crafted extension, an attacker
 could potentially exploit these to obtain sensitive information or bypass
 security restrictions. (CVE-2018-5132, CVE-2018-5134, CVE-2018-5135)
 It was discovered that the value of app.support.baseURL is not sanitized
 properly. If a malicious local application were to set this to a specially
 crafted value, an attacker could potentially exploit this to execute
 arbitrary code. (CVE-2018-5133)
 It was discovered that javascript: URLs with embedded tab characters could
 be pasted in to the addressbar. If a user were tricked in to copying a
 specially crafted URL in to the addressbar, an attacker could exploit this
 to conduct cross-site scripting (XSS) attacks. (CVE-2018-5143)

Update instructions:

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

Ubuntu 16.04 LTS:
  firefox                         59.0.2+build1-0ubuntu0.16.04.3

Ubuntu 14.04 LTS:
  firefox                         59.0.2+build1-0ubuntu0.14.04.4

After a standard system update you need to restart Firefox to make
all the necessary changes.


Package Information:

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
Comment: http://www.auscert.org.au/render.html?it=1967