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AUSCERT External Security Bulletin Redistribution
ESB-2020.1626.2
USN-4353-1: Firefox vulnerabilities
13 May 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/Unauthenticated
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12396 CVE-2020-12395 CVE-2020-12394
CVE-2020-12392 CVE-2020-12391 CVE-2020-12390
CVE-2020-12387 CVE-2020-6831
Reference: ESB-2020.1624
ESB-2020.1610
Original Bulletin:
https://usn.ubuntu.com/4353-1/
https://usn.ubuntu.com/4353-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
Revision History: May 13 2020: Vendor notification concerning SN-4353-2: Firefox regression
May 8 2020: Initial Release
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USN-4353-1: Firefox vulnerabilities
7 May 2020
firefox vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
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, 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 Devtools Copy as cURL feature did not properly
escape the HTTP POST data of a request. 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 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
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-2020-12387
o CVE-2020-12390
o CVE-2020-12391
o CVE-2020-12392
o CVE-2020-12394
o CVE-2020-12395
o CVE-2020-12396
o CVE-2020-6831
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USN-4353-2: Firefox regression
12 May 2020
firefox regression
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
USN-4353-1 caused a regression in Firefox.
Software Description
o firefox - Mozilla Open Source web browser
Details
USN-4353-1 fixed vulnerabilities in Firefox. The update caused a regression
that impaired the functionality of some addons. This update fixes the problem.
We apologize for the inconvenience.
Original advisory 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 Devtools Copy as cURL feature did not properly
HTTP POST data of a request. 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 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 - 76.0.1+build1-0ubuntu0.20.04.1
Ubuntu 19.10
firefox - 76.0.1+build1-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
firefox - 76.0.1+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
firefox - 76.0.1+build1-0ubuntu0.16.04.1
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 USN-4353-1
o LP: 1878251
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