Vulnerability Details : CVE-2020-12423
When the Windows DLL "webauthn.dll" was missing from the Operating System, and a malicious one was placed in a folder in the user's %PATH%, Firefox may have loaded the DLL, leading to arbitrary code execution. *Note: This issue only affects the Windows operating system; other operating systems are unaffected.* This vulnerability affects Firefox < 78.
Products affected by CVE-2020-12423
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-12423
0.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-12423
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-12423
-
The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-12423
-
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
[security-announce] openSUSE-SU-2020:0983-1: important: Security updateBroken Link
-
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
[security-announce] openSUSE-SU-2020:1017-1: important: Security updateBroken Link
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1642400
Access DeniedIssue Tracking;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-24/
Security Vulnerabilities fixed in Firefox 78 — MozillaVendor Advisory
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