ESB-2019.0276 - [Ubuntu] firefox: Multiple vulnerabilities 2019-01-31

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0276
                          Firefox vulnerabilities
                              31 January 2019

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        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
                   Access Privileged Data          -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-18506 CVE-2018-18505 CVE-2018-18504
                   CVE-2018-18503 CVE-2018-18502 CVE-2018-18501
                   CVE-2018-18500  

Reference:         ASB-2019.0042
                   ESB-2019.0267
                   ESB-2019.0268
                   ESB-2019.0272

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3874-1

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USN-3874-1: Firefox vulnerabilities

30 January 2019
firefox 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

Firefox could be made to crash or run programs as your login if it opened a
malicious website.

Software Description

    firefox - Mozilla Open Source web browser

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, gain additional privileges by escaping the
sandbox, or execute arbitrary code. (CVE-2018-18500, CVE-2018-18501,
CVE-2018-18502, CVE-2018-18503, CVE-2018-18504, CVE-2018-18505)

It was discovered that Firefox allowed PAC files to specify that requests to
localhost are sent through the proxy to another server. If proxy auto-detection
is enabled, an attacker could potentially exploit this to conduct attacks on
local services and tools. (CVE-2018-18506)

Update instructions

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

Ubuntu 18.10
    firefox - 65.0+build2-0ubuntu0.18.10.1
Ubuntu 18.04 LTS
    firefox - 65.0+build2-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
    firefox - 65.0+build2-0ubuntu0.16.04.1
Ubuntu 14.04 LTS
    firefox - 65.0+build2-0ubuntu0.14.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

    CVE-2018-18500
    CVE-2018-18501
    CVE-2018-18502
    CVE-2018-18503
    CVE-2018-18504
    CVE-2018-18505
    CVE-2018-18506

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