USN-3477-4: Firefox regression

Ubuntu Security Notice USN-3477-4

3rd January, 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

Summary

USN-3477-1 caused a regression in Firefox.

Software description

  • firefox
    – Mozilla Open Source web browser

Details

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 version:

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

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

LP: 1741048

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USN-3514-1: WebKitGTK+ vulnerabilities

Ubuntu Security Notice USN-3514-1

3rd January, 2018

webkit2gtk vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in WebKitGTK+.

Software description

  • webkit2gtk
    – Web content engine library for GTK+

Details

A large number of security issues were discovered in the WebKitGTK+ Web and
JavaScript engines. If a user were tricked into viewing a malicious
website, a remote attacker could exploit a variety of issues related to web
browser security, including cross-site scripting attacks, denial of service
attacks, and arbitrary code execution.

Update instructions

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

Ubuntu 17.10:
libwebkit2gtk-4.0-37

2.18.4-0ubuntu0.17.10.1
libjavascriptcoregtk-4.0-18

2.18.4-0ubuntu0.17.10.1
Ubuntu 17.04:
libwebkit2gtk-4.0-37

2.18.4-0ubuntu0.17.04.1
libjavascriptcoregtk-4.0-18

2.18.4-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libwebkit2gtk-4.0-37

2.18.4-0ubuntu0.16.04.1
libjavascriptcoregtk-4.0-18

2.18.4-0ubuntu0.16.04.1

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

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK+, such as Epiphany, to make all the necessary changes.

References

CVE-2017-13856,

CVE-2017-13866,

CVE-2017-13870,

CVE-2017-7156

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Linux Mint 19 Release Date & Features

linux mint thumbnailThe name and approximate release date of Linux Mint 19 have been revealed. The next major release of the popular Ubuntu-based Linux operating system will be called Linux Mint 19 “Tara”. Yes, Tara. The codename is firmly in keeping with other Linux Mint releases, all of which use female forenames. Alongside the name we also […]

This post, Linux Mint 19 Release Date & Features, was written by Joey Sneddon and first appeared on OMG! Ubuntu!.

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