CVE-2018-8156 Cross-site scripting in Microsoft Project Server
Attackers can exploit improper sanitization in SharePoint to elevate privileges via crafted web requests.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-8156?
CVE-2018-8156 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Server, published on 9 May 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Elevation of Privilege Vulnerability." This affects Microsoft SharePoint, Microsoft Project Server. This CVE ID is unique from CVE-2018-8149, CVE-2018-8155, CVE-2018-8168.
Weakness: CWE-79
Which versions are affected by CVE-2018-8156?
It affects 2 products.
Products include Microsoft Project Server, Microsoft Sharepoint Server.
How do I fix CVE-2018-8156?
No fix has been published for CVE-2018-8156 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2018-8156 being exploited?
There is no known exploitation of CVE-2018-8156 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Server
Sources
Also known as GHSA-p8cv-3fj6-f5hw.