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AUSCERT External Security Bulletin Redistribution
ESB-2020.0895
USN-4299-1: Firefox vulnerabilities
12 March 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Firefox
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-6815 CVE-2020-6814 CVE-2020-6813
CVE-2020-6812 CVE-2020-6811 CVE-2020-6810
CVE-2020-6809 CVE-2020-6808 CVE-2020-6807
CVE-2020-6806 CVE-2020-6805 CVE-2019-20503
Reference: ESB-2020.0878
ESB-2020.0868
ESB-2020.0866
Original Bulletin:
https://usn.ubuntu.com/4299-1/
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USN-4299-1: Firefox vulnerabilities
11 March 2020
firefox vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o 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
o 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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to restart Firefox to make all the
necessary changes.
References
o CVE-2019-20503
o CVE-2020-6805
o CVE-2020-6806
o CVE-2020-6807
o CVE-2020-6808
o CVE-2020-6809
o CVE-2020-6810
o CVE-2020-6811
o CVE-2020-6812
o CVE-2020-6813
o CVE-2020-6814
o CVE-2020-6815
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