[USN-4122-1] Firefox vulnerabilities

---------- Forwarded message ---------
From: Chris Coulson
Date: Sep 5, 2019 5:50AM

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 obtain sensitive information, bypass
Content Security Policy (CSP) protections, bypass same-origin
restrictions, conduct cross-site scripting (XSS) attacks, cause a denial
of service, or execute arbitrary code. (CVE-2019-5849, CVE-2019-11734,
CVE-2019-11735, CVE-2019-11737, CVE-2019-11738, CVE-2019-11740,
CVE-2019-11742, CVE-2019-11743, CVE-2019-11744, CVE-2019-11746,
CVE-2019-11748, CVE-2019-11749, CVE-2019-11750, CVE-2019-11752)

It was discovered that a compromised content process could log in to a
malicious Firefox Sync account. An attacker could potentially exploit
this, in combination with another vulnerability, to disable the sandbox.
(CVE-2019-9812)

It was discovered that addons.mozilla.org and accounts.firefox.com could
be loaded in to the same content process. An attacker could potentially
exploit this, in combination with another vulnerability that allowed a
cross-site scripting (XSS) attack, to modify browser settings.
(CVE-2019-11741)

It was discovered that the "Forget about this site" feature in the
history pane removes HTTP Strict Transport Security (HSTS) settings for
sites on the pre-load list. An attacker could potentially exploit this
to bypass the protections offered by HSTS. (CVE-2019-11747)

References:
  https://usn.ubuntu.com/4122-1
  CVE-2019-11734, CVE-2019-11735, CVE-2019-11737, CVE-2019-11738,
  CVE-2019-11740, CVE-2019-11741, CVE-2019-11742, CVE-2019-11743,
  CVE-2019-11744, CVE-2019-11746, CVE-2019-11747, CVE-2019-11748,
  CVE-2019-11749, CVE-2019-11750, CVE-2019-11752, CVE-2019-5849,
  CVE-2019-9812