CVE-2020-1025
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
74.8%
<p>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.</p>
<p>To exploit this vulnerability, an attacker would need to modify the token.</p>
<p>The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.</p>
| Vendor | Product | Version | CPE |
|---|---|---|---|
| microsoft | skype_for_business_server | * | cpe:2.3:a:microsoft:skype_for_business_server:*:*:*:*:*:cu2:*:* |
| microsoft | skype_for_business_server | * | cpe:2.3:a:microsoft:skype_for_business_server:*:*:*:*:*:cu_8:*:* |
| microsoft | microsoft_lync_server_2013 | 0 | cpe:2.3:a:microsoft:microsoft_lync_server_2013:0:*:*:*:*:*:*:* |
| microsoft | microsoft_sharepoint_enterprise_server_2016 | 16.0.0 | cpe:2.3:a:microsoft:microsoft_sharepoint_enterprise_server_2016:16.0.0:*:*:*:*:*:*:* |
| microsoft | microsoft_sharepoint_server_2019 | 16.0.0 | cpe:2.3:a:microsoft:microsoft_sharepoint_server_2019:16.0.0:*:*:*:*:*:*:* |
| microsoft | microsoft_sharepoint_foundation_2013_sp1 | 15.0.0 | cpe:2.3:a:microsoft:microsoft_sharepoint_foundation_2013_sp1:15.0.0:sp1:*:*:*:*:*:* |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
74.8%