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==========================================================================
Ubuntu Security Notice USN-4299-1
March 11, 2020
firefox vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- 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, spoof the URL or
other browser chrome, obtain sensitive information, bypass Content
Security Policy (CSP) protections, or execute arbitrary code.
(CVE-2019-20503, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807,
CVE-2020-6808, CVE-2020-6810, CVE-2020-6812, CVE-2020-6813, CVE-2020-6814,
CVE-2020-6815)
It was discovered that Web Extensions with the all-url permission could
access local files. If a user were tricked in to installing a specially
crafted extension, an attacker could potentially exploit this to obtain
sensitive information. (CVE-2020-6809)
It was discovered that the Devtools' 'Copy as cURL' feature did not
fully
escape website-controlled data. If a user were tricked in to using the
'Copy as cURL' feature to copy and paste a command with specially
crafted
data in to a terminal, an attacker could potentially exploit this to
execute arbitrary commands via command injection. (CVE-2020-6811)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.10:
firefox 74.0+build3-0ubuntu0.19.10.1
Ubuntu 18.04 LTS:
firefox 74.0+build3-0ubuntu0.18.04.1
Ubuntu 16.04 LTS:
firefox 74.0+build3-0ubuntu0.16.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://usn.ubuntu.com/4299-1
CVE-2019-20503, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807,
CVE-2020-6808, CVE-2020-6809, CVE-2020-6810, CVE-2020-6811,
CVE-2020-6812, CVE-2020-6813, CVE-2020-6814, CVE-2020-6815
Package Information:
https://launchpad.net/ubuntu/+source/firefox/74.0+build3-0ubuntu0.19.10.1
https://launchpad.net/ubuntu/+source/firefox/74.0+build3-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/74.0+build3-0ubuntu0.16.04.1
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