Multiple vulnerabilities in Microsoft SharePoint
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-8635 CVE-2018-8580 |
| CWE-ID | CWE-264 CWE-352 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Microsoft SharePoint Server Server applications / Application servers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Privilege escalation
EUVDB-ID: #VU16449
Risk: High
CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-8635
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2010 - 2016
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8635
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Cross-site search attacks
EUVDB-ID: #VU16450
Risk: Low
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-8580
CWE-ID:
CWE-352 - Cross-Site Request Forgery (CSRF)
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to perform cross-site search attacks.
The weakness exists due to insufficient CSRF protections in certain modes of the search function in Microsoft SharePoint Server. A remote attacker can create a specially crafted HTML page or URL, trick the victim into visiting it, induce the browser to invoke search queries as the logged in user through standard browser functionality to determine whether the query did return results or not, and thus by issuing targeted queries discover facts about documents that are searchable for the logged-in user.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2013 - 2016
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8580
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
