Critical severity · published Jul 23, 2019
CVE-2019-9819
A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash. 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-2019-9819
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9819
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1532553
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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