exploit the possibilities

Ubuntu Security Notice USN-3645-2

Ubuntu Security Notice USN-3645-2
Posted May 19, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3645-2 - USN-3645-1 fixed vulnerabilities in Firefox. The update caused an issue where users experienced long UI pauses in some circumstances. This update fixes the problem. 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 via application crash, bypass same-origin restrictions, conduct cross-site scripting attacks, install lightweight themes without user interaction, spoof the filename in the downloads panel, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof, vulnerability, xss
systems | linux, ubuntu
advisories | CVE-2018-5155, CVE-2018-5157, CVE-2018-5158, CVE-2018-5159, CVE-2018-5160, CVE-2018-5163, CVE-2018-5164, CVE-2018-5167, CVE-2018-5168, CVE-2018-5169, CVE-2018-5172, CVE-2018-5173, CVE-2018-5175, CVE-2018-5176, CVE-2018-5177, CVE-2018-5180, CVE-2018-5181, CVE-2018-5182
MD5 | d79a2b390689ee5da50dd49ae53da56c

Ubuntu Security Notice USN-3645-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3645-2
May 18, 2018

firefox regression
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-3645-1 caused a regression in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-3645-1 fixed vulnerabilities in Firefox. The update caused an issue
where users experienced long UI pauses in some circumsances. 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 via application
crash, bypass same-origin restrictions, conduct cross-site scripting (XSS)
attacks, install lightweight themes without user interaction, spoof the
filename in the downloads panel, or execute arbitrary code.
(CVE-2018-5150, CVE-2018-5151, CVE-2018-5153, CVE-2018-5154,
CVE-2018-5155, CVE-2018-5157, CVE-2018-5158, CVE-2018-5159, CVE-2018-5160,
CVE-2018-5163, CVE-2018-5164, CVE-2018-5168, CVE-2018-5173, CVE-2018-5175,
CVE-2018-5177, CVE-2018-5180)

Multiple security issues were discovered with WebExtensions. If a user
were tricked in to installing a specially crafted extension, an attacker
could potentially exploit these to obtain sensitive information, or bypass
security restrictions. (CVE-2018-5152, CVE-2018-5166)

It was discovered that the web console and JavaScript debugger incorrectly
linkified chrome: and javascript URLs. If a user were tricked in to
clicking a specially crafted link, an attacker could potentially exploit
this to conduct cross-site scripting (XSS) attacks. (CVE-2018-5167)

It was discovered that dragging and dropping link text on to the home
button could set the home page to include chrome pages. If a user were
tricked in to dragging and dropping a specially crafted link on to the
home button, an attacker could potentially exploit this bypass security
restrictions. (CVE-2018-5169)

It was discovered that the Live Bookmarks page and PDF viewer would run
script pasted from the clipboard. If a user were tricked in to copying and
pasting specially crafted text, an attacker could potentially exploit this
to conduct cross-site scripting (XSS) attacks. (CVE-2018-5172)

It was discovered that the JSON viewer incorrectly linkified javascript:
URLs. If a user were tricked in to clicking on a specially crafted link,
an attacker could potentially exploit this to obtain sensitive
information. (CVE-2018-5176)

It was discovered that dragging a file: URL on to a tab that is running in
a different process would cause the file to open in that process. If a
user were tricked in to dragging a file: URL, an attacker could
potentially exploit this to bypass intended security policies.
(CVE-2018-5181)

It was discovered that dragging text that is a file: URL on to the
addressbar would open the specified file. If a user were tricked in to
dragging specially crafted text on to the addressbar, an attacker could
potentially exploit this to bypass intended security policies.
(CVE-2018-5182)

Update instructions:

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

Ubuntu 18.04 LTS:
firefox 60.0.1+build2-0ubuntu0.18.04.1

Ubuntu 17.10:
firefox 60.0.1+build2-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
firefox 60.0.1+build2-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
firefox 60.0.1+build2-0ubuntu0.14.04.1

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

References:
https://usn.ubuntu.com/usn/usn-3645-2
https://usn.ubuntu.com/usn/usn-3645-1
https://launchpad.net/bugs/1772115

Package Information:
https://launchpad.net/ubuntu/+source/firefox/60.0.1+build2-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/60.0.1+build2-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/firefox/60.0.1+build2-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/60.0.1+build2-0ubuntu0.14.04.1


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