USN-3991-1: Firefox vulnerabilities

firefox vulnerabilities

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

• Ubuntu 19.04
• Ubuntu 18.10
• 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 cause a denial of service, spoof the browser UI, trick the user in to launching local executable binaries, obtain sensitive information, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11691, CVE-2019-11692, CVE-2019-11693, CVE-2019-11695, CVE-2019-11696, CVE-2019-11699, CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814, CVE-2019-9817, CVE-2019-9819, CVE-2019-9820, CVE-2019-9821)

It was discovered that pressing certain key combinations could bypass addon installation prompt delays. If a user opened a specially crafted website, an attacker could potentially exploit this to trick them in to installing a malicious extension. (CVE-2019-11697)

It was discovered that history data could be exposed via drag and drop of hyperlinks to and from bookmarks. If a user were tricked in to dragging a specially crafted hyperlink to the bookmark toolbar or sidebar, and subsequently back in to the web content area, an attacker could potentially exploit this to obtain sensitive information. (CVE-2019-11698)

A type confusion bug was discovered with object groups and UnboxedObjects. If a user were tricked in to opening a specially crafted website after enabling the UnboxedObjects feature, an attacker could potentially exploit this to bypass security checks. (CVE-2019-9816)

Update instructions

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

Ubuntu 19.04

firefox - 67.0+build2-0ubuntu0.19.04.1

Ubuntu 18.10

firefox - 67.0+build2-0ubuntu0.18.10.1

Ubuntu 18.04 LTS

firefox - 67.0+build2-0ubuntu0.18.04.1

Ubuntu 16.04 LTS

firefox - 67.0+build2-0ubuntu0.16.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2019-11691
• CVE-2019-11692
• CVE-2019-11693
• CVE-2019-11695
• CVE-2019-11696
• CVE-2019-11697
• CVE-2019-11698
• CVE-2019-11699
• CVE-2019-11701
• CVE-2019-7317
• CVE-2019-9800
• CVE-2019-9814
• CVE-2019-9816
• CVE-2019-9817
• CVE-2019-9819
• CVE-2019-9820
• CVE-2019-9821

from Ubuntu Security Notices http://bit.ly/2LYnZ3X