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Ubuntu 15.04: USN-2702-1 Critical: Firefox Website Exploit Risks

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Calendar Grey August 11, 2015
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Ubuntu Security Announcement USN-2702-1 addresses vulnerabilities in firefox, highlighting potentials for crashes and unauthorized code execution.
Firefox could be made to crash or run programs as your login if it opened a malicious website.

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:

Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley,

Chris Coulson, and Eric Rahm 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-2015-4473, CVE-2015-4474)

Aki Helin discovered an out-of-bounds read when playing malformed MP3

content in some circumstances. If a user were tricked in to opening a

specially crafted website, an attacker could potentially exploit this to

obtain sensitive information, cause a denial of service via application

crash, or execute arbitrary code with the privileges of the user invoking

Firefox. (CVE-2015-44...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service code execution firefox ubuntu memory safety malicious website

Update Instructions

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

Ubuntu 15.04:
  firefox                         40.0+build4-0ubuntu0.15.04.1

Ubuntu 14.04 LTS:
  firefox                         40.0+build4-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  firefox                         40.0+build4-0ubuntu0.12.04.1

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

References

https://ubuntu.com/security/notices/USN-2702-1

CVE-2015-4473, CVE-2015-4474, CVE-2015-4475, CVE-2015-4477,

CVE-2015-4478, CVE-2015-4479, CVE-2015-4480, CVE-2015-4484,

CVE-2015-4485, CVE-2015-4486, CVE-2015-4487, CVE-2015-4488,

CVE-2015-4489, CVE-2015-4490, CVE-2015-4491, CVE-2015-4492,

CVE-2015-4493

Severity
critical
Lowest
Low
Medium
High
Critical

August 11, 2015

Topics%20covered

Topics Covered

security advisory denial of service code execution firefox ubuntu memory safety malicious website

Package Information

https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.15.04.1
https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.12.04.1

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