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CVE-2020-12423

Date: July 9, 2020

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.

Severity Score

Related Resources (7)

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
https://nvd.nist.gov/vuln/detail/CVE-2020-12423
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1642400
https://security.alpinelinux.org/vuln/CVE-2020-12423
https://www.mozilla.org/security/advisories/mfsa2020-24/
https://www.mend.io/vulnerability-database/CVE-2020-12423

Severity Score

Weakness Type (CWE)

Uncontrolled Search Path Element

CWE-427

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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