Vulnerability Name:

CVE-2021-27076 (CCN-197284)

Assigned:2021-03-09
Published:2021-03-09
Updated:2021-03-16
Summary:Microsoft SharePoint Server Remote Code Execution Vulnerability
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-27076

Source: XF
Type: UNKNOWN
ms-sharepoint-cve202127076-code-exec(197284)

Source: CCN
Type: Microsoft Security TechCenter - March 2021
Microsoft SharePoint Server Remote Code Execution Vulnerability

Source: MISC
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27076

Source: CCN
Type: ZDI-21-276
Microsoft SharePoint InfoPath List Deserialization of Untrusted Data Remote Code Execution Vulnerability

Source: MISC
Type: Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-276/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:business_productivity_servers:2010:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
  • OR cpe:/a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:sharepoint_server:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:sharepoint_enterprise_server:2016:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    microsoft business productivity servers 2010 sp2
    microsoft sharepoint foundation 2013 sp1
    microsoft sharepoint server 2016
    microsoft sharepoint server 2019
    microsoft sharepoint server 2010 sp2
    microsoft sharepoint server 2013 sp1
    microsoft sharepoint enterprise server 2016 -
    microsoft sharepoint server 2019