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Ubuntu Security Notice USN-4122-1

Ubuntu Security Notice USN-4122-1
Posted Sep 4, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4122-1 - 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 protections, bypass same-origin restrictions, conduct cross-site scripting attacks, cause a denial of service, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, xss
systems | linux, ubuntu
advisories | CVE-2019-11734, CVE-2019-11735, CVE-2019-11737, CVE-2019-11740, CVE-2019-11741, CVE-2019-11742, CVE-2019-11743, CVE-2019-11744, CVE-2019-11747, CVE-2019-11748, CVE-2019-11749, CVE-2019-9812
MD5 | 65b4aaaa7f9a51d593da58f90b5f720e

Ubuntu Security Notice USN-4122-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4122-1
September 04, 2019

firefox vulnerabilities
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- 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:
- 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 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)

Update instructions:

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

Ubuntu 19.04:
firefox 69.0+build2-0ubuntu0.19.04.1

Ubuntu 18.04 LTS:
firefox 69.0+build2-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
firefox 69.0+build2-0ubuntu0.16.04.4

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

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

Package Information:
https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/69.0+build2-0ubuntu0.16.04.4

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