High severity · published Jul 9, 2020
CVE-2020-12406
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash
8.8
CVSS
1%
EPSS
No
On KEV
Description
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
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)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 77.0 · source: NVD
FE
Firefox Esr · Mozilla
before 68.9.0 · source: NVD
TH
Thunderbird · Mozilla
before 68.9.0 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 19.10; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12406
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12406
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1639590
Third Party Advisory
https://usn.ubuntu.com/4421-1/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-20/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-21/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-22/
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