CVE-2019-11758: High severity Mozilla Firefox vulnerability
A flaw was found in the 360 Total Security code in Firefox and Thunderbird. Memory corruption is possible in the accessibility engine that could lead to an exploit to run arbitrary code. This vulnerability could be exploited over a network connection and would affect confidentiality and integrity of information as well as availability of the system.
Other sources
Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code.
— Mozilla
Mozilla developer Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code.
— Mozilla
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2019-15903
- CVE-2019-11757
- CVE-2019-11758
- CVE-2019-11759
- CVE-2019-11760
- CVE-2019-11761
- CVE-2019-11762
- CVE-2019-11763
- CVE-2019-11764
- CVE-2019-11751
- CVE-2019-11746
- CVE-2019-11744
- CVE-2019-11742
- CVE-2019-11736
- CVE-2019-11753
- CVE-2019-11752
- CVE-2019-9812
- CVE-2019-11741
- CVE-2019-11743
- CVE-2019-11748
- CVE-2019-11749
- CVE-2019-5849
- CVE-2019-11750
- CVE-2019-11737
- CVE-2019-11738
- CVE-2019-11747
- CVE-2019-11734
- CVE-2019-11735
- CVE-2019-11740
Frequently Asked Questions
What is CVE-2019-11758?
CVE-2019-11758 is a memory safety bug present in Firefox 68 when 360 Total Security was installed, which could be exploited to run arbitrary code.
What is the severity level of CVE-2019-11758?
CVE-2019-11758 has a severity level of 8.8 (high).
What software is affected by CVE-2019-11758?
Firefox 68 and Thunderbird 68.2 are affected by CVE-2019-11758.
How can I fix CVE-2019-11758?
To fix CVE-2019-11758, update Firefox or Thunderbird to version 68.2 or higher.
Where can I find more information about CVE-2019-11758?
You can find more information about CVE-2019-11758 at the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1536227), [Mozilla Security Advisories - MFSA2019-33](https://www.mozilla.org/en-US/security/advisories/mfsa2019-33/), [Mozilla Security Advisories - MFSA2019-35](https://www.mozilla.org/en-US/security/advisories/mfsa2019-35/).