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Ubuntu 4122-1: Critical Firefox Crashes Due To Malicious Websites

ubuntu
Calendar Grey September 4, 2019
Dist Ubuntu Esm H88
Reveal critical Firefox security flaws affecting Ubuntu systems. This encompasses upgrade instructions and specifics on potential exploits to enhance user safety.
Firefox could be made to crash or run programs as your login if it opened a malicious website.

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 ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory code execution DoS Ubuntu firefox crash malicious website

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

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

Severity
critical
Lowest
Low
Medium
High
Critical

September 04, 2019

Topics%20covered

Topics Covered

security advisory code execution DoS Ubuntu firefox crash malicious website

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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