CVE-2017-8642 Cross-site scripting in Microsoft Edge
An attacker can elevate privileges in Microsoft Edge on Windows 10 due to improper JavaScript validation, requiring a security patch.
- 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-2017-8642?
CVE-2017-8642 is a medium-severity cross-site scripting vulnerability in Microsoft Edge, published on 8 Aug 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
Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to elevate privileges due to the way that Microsoft Edge validates JavaScript under specific conditions, aka "Microsoft Edge Elevation of Privilege Vulnerability". This CVE ID is unique from CVE-2017-8503.
Weakness: CWE-79
Which versions are affected by CVE-2017-8642?
It affects 1 product.
Products include Microsoft Edge.
How do I fix CVE-2017-8642?
No fix has been published for CVE-2017-8642 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-2017-8642 being exploited?
There is no known exploitation of CVE-2017-8642 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Edge
Sources
Also known as GHSA-pmjq-9rhw-g9xw.