CVE-2018-8635

Microsoft SharePoint Server Elevation of Privilege Vulnerability

CVE-2018-8635 is fixed in 3 products on 1 platform, first by KB4461558, released December 11, 2018. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Unlikely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0613
93rd percentile

<p>An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server. An attacker who successfully exploited this vulnerability could execute malicious code on a vulnerable server in the context of the SharePoint application pool account.</p> <p>To exploit this vulnerability, an authenticated attacker would need to create a page specifically designed to cause a server-side request. The attacker would then send a specially-crafted message to perform a server-side request forgery attack.</p> <p>The update addresses the vulnerability by modifying how Microsoft SharePoint Server manages server authentication.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft SharePoint Enterprise Server 2013 Service Pack 1 KB4461558 Dec 11, 2018
Microsoft SharePoint Enterprise Server 2016 KB4461541 Dec 11, 2018
Microsoft SharePoint Server 2010 Service Pack 2 KB4461465 Dec 11, 2018