Critical severity · published Jul 23, 2019
CVE-2019-9800
Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 67.0 · source: NVD
FE
Firefox Esr · Mozilla
before 60.7 · source: NVD
TH
Thunderbird · Mozilla
before 60.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9800
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9800
Permissions Required
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1540166%2C1534593%2C1546327%2C1540136%2C1538736%2C1538042%2C1535612%2C1499719%2C1499108%2C1538619%2C1535194%2C1516325%2C1542324%2C1542097%2C1532465%2C1533554%2C1541580
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-13/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/
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