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Ubuntu Security Notice USN-3435-1

Ubuntu Security Notice USN-3435-1
Posted Oct 3, 2017
Authored by Ubuntu | Site security.ubuntu.com

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.

tags | advisory, denial of service, arbitrary, spoof, xss
systems | linux, ubuntu
advisories | 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
MD5 | f04486fc6c43f2ce047c937967095f07

Ubuntu Security Notice USN-3435-1

Change Mirror Download
==========================================================================
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


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