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Ubuntu Security Notice USN-3609-1
March 27, 2018

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

– Ubuntu 17.10
– 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:

A use-after-free was discovered in Firefox. If a user were tricked in to
opening a specially crafted website, an attacker could potentially exploit
this to cause a denial of service or execute arbitrary code.

Update instructions:

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

Ubuntu 17.10:
firefox 59.0.2+build1-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
firefox 59.0.2+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
firefox 59.0.2+build1-0ubuntu0.14.04.1

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

References:
https://usn.ubuntu.com/usn/usn-3609-1
CVE-2018-5148

Package Information:
https://launchpad.net/ubuntu/+source/firefox/59.0.2+build1-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/firefox/59.0.2+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/59.0.2+build1-0ubuntu0.14.04.1

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