Vulnerability Name:

CCN-172977

Published:2019-12-12
Updated:2019-12-12
Summary:Microsoft Windows Defender Antivirus could allow a remote attacker to conduct spoofing attacks, caused by improper input validation. By persuading a victim to open a specially-crafted file extension, an attacker could exploit this vulnerability using the RTL unicode character to spoof and imitate an arbitrary file extension.
CVSS v3 Severity:7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:6.2 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): None
Vulnerability Consequences:Gain Access
References:Source: XF
Type: UNKNOWN
ms-windows-defender-spoofing(172977)

Source: CCN
Type: Packet Storm Security [12-12-2019]
Windows Defender Antivirus 4.18.1908.7-0 File Extension Spoofing

Source: CCN
Type: Full-Disclosure Mailing List, Thu, 12 Dec 2019 09:17:32 +0100
SEC Consult SA-20191211-0 File Extension Spoofing in Windows Defender Antivirus

Source: CCN
Type: Microsoft Web site
Windows Defender Antivirus

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:microsoft:windows_defender:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows defender *