Critical severity · published May 26, 2020
CVE-2020-12395
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7
9.8
CVSS
2.6%
EPSS
No
On KEV
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
CVSS vector
CVSS:3.1/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)2.6% · higher than 85% 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
TH
Thunderbird · Mozilla
before 68.8.0 · 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-2020-12395
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12395
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508
Third Party Advisory
https://security.gentoo.org/glsa/202005-03
Third Party Advisory
https://security.gentoo.org/glsa/202005-04
Third Party Advisory
https://usn.ubuntu.com/4373-1/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-17/
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