High severity · published Aug 10, 2020
CVE-2020-15657
Firefox could be made to load attacker-supplied DLL files from the installation directory
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 79.0 · source: NVD
FE
Firefox Esr · Mozilla
before 78.1 · source: NVD
TH
Thunderbird · Mozilla
before 78.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15657
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15657
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1644954
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-30/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-32/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-33/
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