High severity · published Jan 8, 2020
CVE-2019-11764
Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1
8.8
CVSS
1.5%
EPSS
No
On KEV
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 70.0 · source: NVD
FE
Firefox Esr · Mozilla
before 68.2 · source: NVD
TH
Thunderbird · Mozilla
before 68.2 · source: NVD
UL
Ubuntu Linux · Canonical
16.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11764
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11764
Exploit
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1558522%2C1577061%2C1548044%2C1571223%2C1573048%2C1578933%2C1575217%2C1583684%2C1586845%2C1581950%2C1583463%2C1586599
Third Party Advisory
https://security.gentoo.org/glsa/202003-10
Third Party Advisory
https://usn.ubuntu.com/4335-1/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-34/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-35/
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