4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:N/I:P/A:N
6.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
0.003 Low
EPSS
Percentile
69.6%
Vulnerability Details:
This vulnerability allows remote attackers escalate privileges under certain conditions. Authentication is required to exploit this vulnerability.
The specific flaw exists within the GetFreeBusyStatusForOneUser function inside of the AsynchronousWebPartService class. The issue results from the lack of proper validation of user-supplied email address when performing web requests. An attacker can leverage this vulnerability to execute arbitrary web requests to protected resources.
Affected Vendors:
Microsoft
Affected Products:
SharePoint Server
Vendor Response:
Microsoft has issued an update to correct this vulnerability. More details can be found at:
<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1440>
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:N/I:P/A:N
6.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
0.003 Low
EPSS
Percentile
69.6%