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zdiPeter Girnus (gothburz) of Trend Micro's Zero Day InitiativeZDI-24-165
HistoryFeb 13, 2024 - 12:00 a.m.

Microsoft Windows Internet Shortcut SmartScreen Bypass Vulnerability

2024-02-1300:00:00
Peter Girnus (gothburz) of Trend Micro's Zero Day Initiative
www.zerodayinitiative.com
20
microsoft
windows
smartscreen
bypass
vulnerability
remote attackers
arbitrary code
user interaction
malicious page
security flaw
internet shortcut
.url files
context of current user

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

7.3 High

AI Score

Confidence

High

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

0.004 Low

EPSS

Percentile

72.2%

This vulnerability allows remote attackers to bypass the SmartScreen security feature to execute arbitrary code on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Internet Shortcut (.URL) files. The issue results from the lack of a security check on chained Internet Shortcut files. An attacker can leverage this vulnerability to execute code in the context of the current user.

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

7.3 High

AI Score

Confidence

High

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

0.004 Low

EPSS

Percentile

72.2%