CVE-2017-0255 Cross-site scripting in Microsoft Office
An attacker can exploit a cross-site scripting flaw in Microsoft SharePoint Foundation to elevate privileges via a crafted web request.
- 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-2017-0255?
CVE-2017-0255 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Foundation, published on 12 May 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Microsoft SharePoint Foundation 2013 SP1 allows an elevation of privilege vulnerability when it does not properly sanitize a specially crafted web request, aka "Microsoft SharePoint XSS Vulnerability".
Weakness: CWE-79
Which versions are affected by CVE-2017-0255?
It affects 1 product.
Products include Microsoft Sharepoint Foundation.
How do I fix CVE-2017-0255?
No fix has been published for CVE-2017-0255 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-2017-0255 being exploited?
There is no known exploitation of CVE-2017-0255 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Foundation
- CVE-2014-2816 Privilege escalation in n/a
- CVE-2023-21742 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2023-21744 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2022-44690 Microsoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2022-41036 Microsoft SharePoint Server Remote Code Execution Vulnerability
Sources
Also known as GHSA-9r5f-fvq3-4j7x.