USN-3544-2: Firefox regressions

12 February 2018

USN-3544-1 caused some regressions in Firefox.

Releases

Packages

  • firefox - Mozilla Open Source web browser

Details

USN-3544-1 fixed vulnerabilities in Firefox. The update caused a web
compatibility regression and a tab crash during printing in some
circumstances. 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, spoof the origin in audio capture prompts, trick the user in to
providing HTTP credentials for another origin, spoof the addressbar
contents, or execute arbitrary code. (CVE-2018-5089, CVE-2018-5090,
CVE-2018-5091, CVE-2018-5092, CVE-2018-5093, CVE-2018-5094, CVE-2018-5095,
CVE-2018-5097, CVE-2018-5098, CVE-2018-5099, CVE-2018-5100, CVE-2018-5101,
CVE-2018-5102, CVE-2018-5103, CVE-2018-5104, CVE-2018-5109, CVE-2018-5114,
CVE-2018-5115, CVE-2018-5117, CVE-2018-5122)

Multiple security issues were discovered in WebExtensions. If a user were
tricked in to installing a specially crafted extension, an attacker could
potentially exploit these to gain additional privileges, bypass
same-origin restrictions, or execute arbitrary code. (CVE-2018-5105,
CVE-2018-5113, CVE-2018-5116)

A security issue was discovered with the developer tools. If a user were
tricked in to opening a specially crafted website with the developer tools
open, an attacker could potentially exploit this to obtain sensitive
information from other origins. (CVE-2018-5106)

A security issue was discovered with printing. An attacker could
potentially exploit this to obtain sensitive information from local files.
(CVE-2018-5107)

It was discovered that manually entered blob URLs could be accessed by
subsequent private browsing tabs. If a user were tricked in to entering
a blob URL, an attacker could potentially exploit this to obtain sensitive
information from a private browsing context. (CVE-2018-5108)

It was discovered that dragging certain specially formatted URLs to the
addressbar could cause the wrong URL to be displayed. If a user were
tricked in to opening a specially crafted website and dragging a URL to
the addressbar, an attacker could potentially exploit this to spoof the
addressbar contents. (CVE-2018-5111)

It was discovered that WebExtension developer tools panels could open
non-relative URLs. If a user were tricked in to installing a specially
crafted extension and running the developer tools, an attacker could
potentially exploit this to gain additional privileges. (CVE-2018-5112)

It was discovered that ActivityStream images can attempt to load local
content through file: URLs. If a user were tricked in to opening a
specially crafted website, an attacker could potentially exploit this in
combination with another vulnerability that allowed sandbox protections to
be bypassed, in order to obtain sensitive information from local files.
(CVE-2018-5118)

It was discovered that the reader view will load cross-origin content in
violation of CORS headers. An attacker could exploit this to bypass CORS
restrictions. (CVE-2018-5119)

Update instructions

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

Ubuntu 17.10
Ubuntu 16.04
Ubuntu 14.04

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