USN-2833-1: Firefox vulnerabilities

Ubuntu Security Notice USN-2833-1

15th December, 2015

firefox vulnerabilities

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

• Ubuntu 15.10



• Ubuntu 15.04



• Ubuntu 14.04 LTS



• Ubuntu 12.04 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

Andrei Vaida, Jesse Ruderman, Bob Clary, Christian Holler, Jesse Ruderman,
Eric Rahm, Robert Kaiser, Harald Kirschner, and Michael Henretty
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. ()

Ronald Crane discovered three buffer overflows through code inspection.
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. (, )

Ronald Crane discovered a buffer overflow through code inspection. 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. ()

It was discovered that Firefox allows for control characters to be set in
cookies. An attacker could potentially exploit this to conduct cookie
injection attacks on some web servers. ()

Abdulrahman Alqabandi discovered that hash symbol is incorrectly handled
when parsing data: URLs. An attacker could potentially exploit this to
conduct URL spoofing attacks. ()

Ronald Crane dicovered an integer overflow when processing MP4 format
video in some circumstances. 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. ()

Masato Kinugawa discovered a cross-origin information leak in error events
in web workers. An attacker could potentially exploit this to obtain
sensitive information. (, ,
)

Kris Maglione discovered a mechanism where web content could use
WebExtension APIs to execute code with the privileges of a particular
WebExtension. If a user were tricked in to opening a specially crafted
website with a vulnerable extension installed, an attacker could
potentially exploit this to obtain sensitive information or conduct
cross-site scripting (XSS) attacks. (







.

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

References

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CVE-2015-7223