ESB-2017.2946.4 - UPDATE [Ubuntu] firefox: Multiple vulnerabilities 2018-01-04

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             AUSCERT External Security Bulletin Redistribution

                          Firefox vulnerabilities
                              4 January 2018


        AusCERT Security Bulletin Summary

Product:           firefox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- 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
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7842 CVE-2017-7840 CVE-2017-7839
                   CVE-2017-7838 CVE-2017-7837 CVE-2017-7835
                   CVE-2017-7834 CVE-2017-7833 CVE-2017-7832
                   CVE-2017-7831 CVE-2017-7830 CVE-2017-7828
                   CVE-2017-7827 CVE-2017-7826 

Reference:         ASB-2017.0199

Original Bulletin:

Revision History:  January   4 2018: Fixes an isssue relating to crash reporting.
                   December  4 2017: USN-3477-1 caused some minor regressions in Firefox.
                   November 28 2017: Regression 
                   November 17 2017: Initial Release

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

Ubuntu Security Notice USN-3477-4
January 03, 2018

firefox regression

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

- - Ubuntu 17.10
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS


USN-3477-1 caused a regression in Firefox.

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


USN-3477-1 fixed vulnerabilities in Firefox. The update introduced a
crash reporting issue where background tab crash reports were sent to 
Mozilla without user opt-in. 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, read uninitialized
 memory, obtain sensitive information, bypass same-origin restrictions,
 bypass CSP protections, bypass mixed content blocking, spoof the
 addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827,
 CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833,
 CVE-2017-7834, CVE-2017-7835, CVE-2017-7837, CVE-2017-7838, CVE-2017-7842)
 It was discovered that javascript: URLs pasted in to the addressbar
 would be executed instead of being blocked in some circumstances. If a
 user were tricked in to copying a specially crafted URL in to the
 addressbar, an attacker could potentially exploit this to conduct
 cross-site scripting (XSS) attacks. (CVE-2017-7839)
 It was discovered that exported bookmarks do not strip script elements
 from user-supplied tags. If a user were tricked in to adding specially
 crafted tags to bookmarks, exporting them and then opening the resulting
 HTML file, an attacker could potentially exploit this to conduct
 cross-site scripting (XSS) attacks. (CVE-2017-7840)

Update instructions:

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

Ubuntu 17.10:
  firefox                         57.0.3+build1-0ubuntu0.17.10.1

Ubuntu 17.04:
  firefox                         57.0.3+build1-0ubuntu0.17.04.1

Ubuntu 16.04 LTS:
  firefox                         57.0.3+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  firefox                         57.0.3+build1-0ubuntu0.14.04.1

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


Package Information:

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

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