Vulnerability Name:

CVE-2020-1421 (CCN-184195)

Assigned:2019-11-04
Published:2020-07-14
Updated:2020-07-23
Summary:A remote code execution vulnerability exists in Microsoft Windows that could allow remote code execution if a .LNK file is processed.An attacker who successfully exploited this vulnerability could gain the same user rights as the local user, aka 'LNK Remote Code Execution Vulnerability'.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
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): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:9.3 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
7.1 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-843
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-1421

Source: XF
Type: UNKNOWN
ms-windows-cve20201421-code-exec(184195)

Source: CCN
Type: Microsoft Security TechCenter - July 2020
LNK Remote Code Execution Vulnerability

Source: MISC
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421

Source: CCN
Type: ZDI-20-923
Microsoft Windows LNK File Parsing Type Confusion Remote Code Execution Vulnerability

Source: MISC
Type: Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-923/

Vulnerable Configuration:Configuration 1:
  • cpe:/o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_server_2004:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_2004:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_10_2004:-:*:*:*:*:*:x86:*
  • OR cpe:/o:microsoft:windows_10_2004:-:*:*:*:*:*:arm64:*

    • Configuration CCN 1:
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_7::sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_8.1:::~~~~x64~:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_10:::~~~~x64~:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:arm64:*
  • OR cpe:/o:microsoft:windows_server:1903:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:1909:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server:2004:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows 10 -
    microsoft windows 10 -
    microsoft windows 10 1607
    microsoft windows 10 1607
    microsoft windows 10 1709
    microsoft windows 10 1709
    microsoft windows 10 1709
    microsoft windows 10 1803
    microsoft windows 10 1803
    microsoft windows 10 1803
    microsoft windows 10 1809
    microsoft windows 10 1809
    microsoft windows server 2016 -
    microsoft windows server 2019 -
    microsoft windows 10 1809
    microsoft windows server 2016 1903
    microsoft windows 10 1903
    microsoft windows server 2016 1909
    microsoft windows 10 1909
    microsoft windows 10 1909
    microsoft windows 10 1903
    microsoft windows 10 1903
    microsoft windows 10 1909
    microsoft windows server 2016 2004
    microsoft windows 10 2004
    microsoft windows 10 2004
    microsoft windows 10 2004
    microsoft windows server 2008 sp2
    microsoft windows server 2008 - sp2
    microsoft windows 7 - sp1
    microsoft windows 7 sp1
    microsoft windows server 2008 r2
    microsoft windows server 2012
    microsoft windows 8.1 - -
    microsoft windows 8.1
    microsoft windows server 2012 r2
    microsoft windows rt 8.1 -
    microsoft windows 10 -
    microsoft windows 10
    microsoft windows server 2016
    microsoft windows server 1803
    microsoft windows server 2019 -
    microsoft windows 10 -
    microsoft windows server 1903
    microsoft windows server 1909
    microsoft windows server 2004