CVE-2017-8551 Cross-site scripting in Microsoft SharePoint
Attackers can exploit improper request sanitization in Microsoft SharePoint to execute cross-site scripting attacks, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-8551?
CVE-2017-8551 is a medium-severity cross-site scripting vulnerability in Microsoft SharePoint, published on 15 Jun 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An elevation of privilege vulnerability exists when Microsoft SharePoint software fails to properly sanitize a specially crafted requests, aka "Microsoft SharePoint XSS vulnerability".
Weakness: CWE-79
Which versions are affected by CVE-2017-8551?
It affects 1 product.
Products include Microsoft Project Server.
How do I fix CVE-2017-8551?
No fix has been published for CVE-2017-8551 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-2017-8551 being exploited?
There is no known exploitation of CVE-2017-8551 in the wild and no public exploit code.
Other vulnerabilities in Microsoft SharePoint
Sources
Also known as GHSA-8cr9-r7p7-cphf.