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AUSCERT External Security Bulletin Redistribution
ESB-2017.2484.2
Firefox vulnerabilities
5 October 2017
===========================================================================
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
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7824 CVE-2017-7823 CVE-2017-7822
CVE-2017-7821 CVE-2017-7820 CVE-2017-7819
CVE-2017-7818 CVE-2017-7816 CVE-2017-7815
CVE-2017-7814 CVE-2017-7813 CVE-2017-7812
CVE-2017-7811 CVE-2017-7810 CVE-2017-7805
CVE-2017-7793
Reference: ASB-2017.0155
ESB-2017.2481
ESB-2017.2466
ESB-2017.2459
ESB-2017.2455
Original Bulletin:
http://www.ubuntu.com/usn/usn-3435-2
Revision History: October 5 2017: USN-3435-1 caused Flash to crash in some
circumstances
October 3 2017: Initial Release
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Ubuntu Security Notice USN-3435-2
October 04, 2017
firefox regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
USN-3435-1 caused a regression in Firefox.
Software Description:
- - firefox: Mozilla Open Source web browser
Details:
USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash
plugin to crash in some circumstances. 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 read uninitialized memory, obtain sensitive
information, bypass phishing and malware protection, spoof the origin in
modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,
CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,
CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824)
Martin Thomson discovered that NSS incorrectly generated handshake hashes.
A remote attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code. (CVE-2017-7805)
Multiple security issues were discovered in WebExtensions. If a user were
tricked in to installing a specially crafted extension, an attacker could
potentially exploit these to download and open non-executable files
without interaction, or obtain elevated privileges. (CVE-2017-7816,
CVE-2017-7821)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
firefox 56.0+build6-0ubuntu0.17.04.2
Ubuntu 16.04 LTS:
firefox 56.0+build6-0ubuntu0.16.04.2
Ubuntu 14.04 LTS:
firefox 56.0+build6-0ubuntu0.14.04.2
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3435-2
https://www.ubuntu.com/usn/usn-3435-1
https://launchpad.net/bugs/1720908
Package Information:
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.17.04.2
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.14.04.2
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