Ubuntu Security Notice 3435-1 - 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 attacks, cause a denial of service via application crash, or execute arbitrary code. Various other issues were also addressed.
c86ee2d1eff650ae175e17d1af6c359f0bd16aa5cac13f5f74b1dfa298e8ba18
==========================================================================
Ubuntu Security Notice USN-3435-1
October 02, 2017
firefox vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- 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 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+build6-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
firefox 56.0+build6-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
firefox 56.0+build6-0ubuntu0.14.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3435-1
CVE-2017-7793, CVE-2017-7805, CVE-2017-7810, CVE-2017-7811,
CVE-2017-7812, CVE-2017-7813, CVE-2017-7814, CVE-2017-7815,
CVE-2017-7816, CVE-2017-7818, CVE-2017-7819, CVE-2017-7820,
CVE-2017-7821, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824
Package Information:
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/56.0+build6-0ubuntu0.14.04.1