Vulnerability Name:

CVE-2020-16949 (CCN-189066)

Assigned:2020-10-13
Published:2020-10-13
Updated:2020-10-21
Summary:A denial of service vulnerability exists in Microsoft Outlook software when the software fails to properly handle objects in memory, aka 'Microsoft Outlook Denial of Service Vulnerability'.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-401
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-16949

Source: XF
Type: UNKNOWN
ms-outlook-cve202016949-dos(189066)

Source: CCN
Type: Microsoft Security TechCenter - October 2020
Microsoft Exchange Denial of Service Vulnerability

Source: MISC
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16949

Vulnerable Configuration:Configuration 1:
  • cpe:/o:microsoft:windows_10:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1803:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1903:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:1909:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_10:2004:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2004:-:*:*:*:*:*:x64:*

    • Configuration 2:
  • cpe:/a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
  • OR cpe:/a:microsoft:office:2019:*:*:*:*:-:*:*
  • OR cpe:/a:microsoft:outlook:2010:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:outlook:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:outlook:2013:sp1:*:*:rt:*:*:*
  • OR cpe:/a:microsoft:outlook:2016:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:outlook:2010:sp2:*:*:*:*:x32:*
  • OR cpe:/a:microsoft:outlook:2010:sp2:*:*:*:*:x64:*
  • OR cpe:/a:microsoft:outlook:2016:*:*:*:*:*:x32:*
  • OR cpe:/a:microsoft:outlook:2016:*:*:*:*:*:x64:*
  • OR cpe:/a:microsoft:outlook:2013:sp1:*:*:*:*:x32:*
  • OR cpe:/a:microsoft:outlook:2013:sp1:*:*:*:*:x64:*
  • OR cpe:/a:microsoft:outlook:2013:sp1:*:*:*:rt:*:*
  • OR cpe:/a:microsoft:office:2019:*:~~~click-to-run~~:*:*:*:x32:*
  • OR cpe:/a:microsoft:office:2019:*:*:*:click-to-run:*:x64:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows 10 -
    microsoft windows 10 1607
    microsoft windows 10 1709
    microsoft windows 10 1803
    microsoft windows 10 1809
    microsoft windows 10 1903
    microsoft windows 10 1909
    microsoft windows 10 2004
    microsoft windows 7 - sp1
    microsoft windows 8.1 -
    microsoft windows rt 8.1 -
    microsoft windows server 2008 - sp2
    microsoft windows server 2008 r2 sp1
    microsoft windows server 2012 r2
    microsoft windows server 2016 -
    microsoft windows server 2012 -
    microsoft windows server 2019 -
    microsoft windows server 2016 1903
    microsoft windows server 2016 1909
    microsoft windows server 2016 2004
    microsoft 365 apps -
    microsoft office 2019
    microsoft outlook 2010 sp2
    microsoft outlook 2013 sp1
    microsoft outlook 2013 sp1
    microsoft outlook 2016
    microsoft outlook 2010 sp2
    microsoft outlook 2010 sp2
    microsoft outlook 2016
    microsoft outlook 2016
    microsoft outlook 2013 sp1
    microsoft outlook 2013 sp1
    microsoft outlook 2013 sp1
    microsoft office 2019
    microsoft office 2019