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==========================================================================
Ubuntu Security Notice USN-4353-1
May 07, 2020
firefox vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 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:
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 cause a denial of service, bypass security
restrictions, spoof the URL bar, or execute arbitrary code.
(CVE-2020-6831, CVE-2020-12387, CVE-2020-12390, CVE-2020-12391,
CVE-2020-12394, CVE-2020-12395, CVE-2020-12396)
It was discovered that the Devtoolsâ âCopy as cURLâ feature did not
properly HTTP POST data of a request. If a user were tricked in to using
the âCopy as cURLâ feature to copy and paste a command with specially
crafted data in to a terminal, an attacker could potentially exploit this
to obtain sensitive information from local files.
(CVE-2020-12392)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
firefox 76.0+build2-0ubuntu0.20.04.1
Ubuntu 19.10:
firefox 76.0+build2-0ubuntu0.19.10.1
Ubuntu 18.04 LTS:
firefox 76.0+build2-0ubuntu0.18.04.1
Ubuntu 16.04 LTS:
firefox 76.0+build2-0ubuntu0.16.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://usn.ubuntu.com/4353-1
CVE-2020-12387, CVE-2020-12390, CVE-2020-12391, CVE-2020-12392,
CVE-2020-12394, CVE-2020-12395, CVE-2020-12396, CVE-2020-6831
Package Information:
https://launchpad.net/ubuntu/+source/firefox/76.0+build2-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/76.0+build2-0ubuntu0.19.10.1
https://launchpad.net/ubuntu/+source/firefox/76.0+build2-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/76.0+build2-0ubuntu0.16.04.1
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