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Ubuntu Security Notice USN-2458-3

Ubuntu Security Notice USN-2458-3
Posted Jan 27, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2458-3 - USN-2458-1 fixed vulnerabilities in Firefox. This update introduced a regression which could make websites that use CSP fail to load under some circumstances. This update fixes the problem. Christian Holler, Patrick McManus, Christoph Diehl, Gary Kwong, Jesse Ruderman, Byron Campen, Terrence Cole, and Nils Ohlmeier discovered multiple memory safety issues 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 via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Bobby Holley discovered that some DOM objects with certain properties can bypass XrayWrappers in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass security restrictions. Michal Zalewski discovered a use of uninitialized memory when rendering malformed bitmap images on a canvas element. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2014-8636, CVE-2014-8637, CVE-2014-8638, CVE-2014-8639, CVE-2014-8640, CVE-2014-8641, CVE-2014-8642
SHA-256 | 741324ee8837b8281a71616c36adb2d0af44e5dc3a322ae1f72ca546e720c2e4

Ubuntu Security Notice USN-2458-3

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2458-3
January 27, 2015

firefox regression
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

USN-2458-1 introduced a regression in Firefox

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-2458-1 fixed vulnerabilities in Firefox. This update introduced a
regression which could make websites that use CSP fail to load under some
circumstances. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Christian Holler, Patrick McManus, Christoph Diehl, Gary Kwong, Jesse
Ruderman, Byron Campen, Terrence Cole, and Nils Ohlmeier discovered
multiple memory safety issues 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 via application crash, or execute
arbitrary code with the privileges of the user invoking Firefox.
(CVE-2014-8634, CVE-2014-8635)

Bobby Holley discovered that some DOM objects with certain properties
can bypass XrayWrappers in some circumstances. If a user were tricked in
to opening a specially crafted website, an attacker could potentially
exploit this to bypass security restrictions. (CVE-2014-8636)

Michal Zalewski discovered a use of uninitialized memory when rendering
malformed bitmap images on a canvas element. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit this to steal confidential information. (CVE-2014-8637)

Muneaki Nishimura discovered that requests from navigator.sendBeacon()
lack an origin header. If a user were tricked in to opening a specially
crafted website, an attacker could potentially exploit this to conduct
cross-site request forgery (XSRF) attacks. (CVE-2014-8638)

Xiaofeng Zheng discovered that a web proxy returning a 407 response
could inject cookies in to the originally requested domain. If a user
connected to a malicious web proxy, an attacker could potentially exploit
this to conduct session-fixation attacks. (CVE-2014-8639)

Holger Fuhrmannek discovered a crash in Web Audio while manipulating
timelines. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to cause a denial
of service. (CVE-2014-8640)

Mitchell Harper discovered a use-after-free in WebRTC. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2014-8641)

Brian Smith discovered that OCSP responses would fail to verify if signed
by a delegated OCSP responder certificate with the id-pkix-ocsp-nocheck
extension, potentially allowing a user to connect to a site with a revoked
certificate. (CVE-2014-8642)

Update instructions:

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

Ubuntu 14.10:
firefox 35.0.1+build1-0ubuntu0.14.10.1

Ubuntu 14.04 LTS:
firefox 35.0.1+build1-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
firefox 35.0.1+build1-0ubuntu0.12.04.1

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

Package Information:
https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.14.10.1
https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.12.04.1
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