Critical severity · published Apr 26, 2019
CVE-2019-9795
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
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 66.0 · source: NVD
FE
Firefox Esr · Mozilla
before 60.6 · source: NVD
TH
Thunderbird · Mozilla
before 60.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9795
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9795
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:0966
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:1144
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1514682
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-07/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/
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