Critical severity · published May 26, 2020
CVE-2020-12388
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape
10.0
CVSS
3.5%
EPSS
No
On KEV
Description
The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.5% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 76.0 · source: NVD
FE
Firefox Esr · Mozilla
before 68.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12388
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12388
Third Party Advisory
http://packetstormsecurity.com/files/157860/Firefox-Default-Content-Process-DACL-Sandbox-Escape.html
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1618911
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-17/
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