Privilege escalation in Microsoft SharePoint Server - CVE-2018-8635
Published: December 11, 2018
Vulnerability identifier: #VU16449
CSH Severity: High
CVSS v4: 9.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H]
CVE-ID: CVE-2018-8635
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated attacker to gain elevated privileges on the target system.
The weakness exists due to improper sanitization of a specially crafted authentication request to an affected SharePoint server. A remote attacker can send a specially crafted message to perform a server-side request forgery attack and execute malicious code on a vulnerable server in the context of the SharePoint application pool account.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to improper sanitization of a specially crafted authentication request to an affected SharePoint server. A remote attacker can send a specially crafted message to perform a server-side request forgery attack and execute malicious code on a vulnerable server in the context of the SharePoint application pool account.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2018-8635
Install updates from vendor's website.