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AUSCERT External Security Bulletin Redistribution
ESB-2017.2946.4
Firefox vulnerabilities
4 January 2018
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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
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
ESB-2017.2920.2
Original Bulletin:
http://www.ubuntu.com/usn/usn-3477-1
http://www.ubuntu.com/usn/usn-3477-2
http://www.ubuntu.com/usn/usn-3477-3
http://www.ubuntu.com/usn/usn-3477-4
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
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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
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 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.
References:
https://www.ubuntu.com/usn/usn-3477-4
https://www.ubuntu.com/usn/usn-3477-1
https://launchpad.net/bugs/1741048
Package Information:
https://launchpad.net/ubuntu/+source/firefox/57.0.3+build1-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/firefox/57.0.3+build1-0ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/firefox/57.0.3+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/57.0.3+build1-0ubuntu0.14.04.1
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