CVE-2020-1025

An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:lync:2013:::::::*
	cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:::::::*
	cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1::::::
	cpe:2.3:a:microsoft:sharepoint_server:2019:::::::*
	cpe:2.3:a:microsoft:skype_for_business:2015:cumulative_update_8::::::
	cpe:2.3:a:microsoft:skype_for_business:2019:cumulative_update_2::::::

History

No history.

Information

Published : 2020-07-14 23:15

Updated : 2024-05-28 21:15

NVD link : CVE-2020-1025

Mitre link : CVE-2020-1025

CVE.ORG link : CVE-2020-1025

JSON object : View

Products Affected

microsoft

sharepoint_server
sharepoint_enterprise_server
sharepoint_foundation
lync
skype_for_business

CWE

CWE-20

Improper Input Validation

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