1. Ubuntu Security Notices
  2. USN-3260-1

USN-3260-1: Firefox vulnerabilities

Publication date

21 April 2017

Overview

Firefox could be made to crash or run programs as your login if it opened a malicious website.

Releases

Packages

  • 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, spoof the addressbar contents or other UI elements, escape
the sandbox to read local files, conduct cross-site scripting (XSS)
attacks, cause a denial of service via application crash, or execute
arbitrary code. (CVE-2017-5429, CVE-2017-5430, CVE-2017-5432,
CVE-2017-5433, CVE-2017-5434, CVE-2017-5435, CVE-2017-5436, CVE-2017-5437,
CVE-2017-5438,

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, spoof the addressbar contents or other UI elements, escape
the sandbox to read local files, conduct cross-site scripting (XSS)
attacks, cause a denial of service via application crash, or execute
arbitrary code. (CVE-2017-5429, CVE-2017-5430, CVE-2017-5432,
CVE-2017-5433, CVE-2017-5434, CVE-2017-5435, CVE-2017-5436, CVE-2017-5437,
CVE-2017-5438, CVE-2017-5439, CVE-2017-5440, CVE-2017-5441, CVE-2017-5442,
CVE-2017-5443, CVE-2017-5444, CVE-2017-5445, CVE-2017-5446, CVE-2017-5447,
CVE-2017-5448, CVE-2017-5449, CVE-2017-5451, CVE-2017-5453, CVE-2017-5454,
CVE-2017-5455, CVE-2017-5456, CVE-2017-5458, CVE-2017-5459, CVE-2017-5460,
CVE-2017-5461, CVE-2017-5464, CVE-2017-5465, CVE-2017-5466, CVE-2017-5467,
CVE-2017-5468, CVE-2017-5469)

A flaw was discovered in the DRBG number generation in NSS. If an
attacker were able to perform a machine-in-the-middle attack, this flaw
could potentially be exploited to view sensitive information.
(CVE-2017-5462)

Update instructions

After a standard system update you need to restart Firefox to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.04 zesty firefox –  53.0+build6-0ubuntu0.17.04.1
16.10 yakkety firefox –  53.0+build6-0ubuntu0.16.10.1
16.04 xenial firefox –  53.0+build6-0ubuntu0.16.04.1
14.04 trusty firefox –  53.0+build6-0ubuntu0.14.04.1

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References

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