CVE-2017-8504 Information disclosure in Microsoft Edge

Medium 4.3 Published Updated

An attacker can read cross-origin request URLs due to incorrect Fetch API handling in Microsoft Edge, exposing sensitive data.

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-2017-8504?

CVE-2017-8504 is a medium-severity vulnerability in Microsoft Edge, 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

Microsoft Edge in Windows 10 1607 and 1703, and Windows Server 2016 allows an attacker to read the URL of a cross-origin request when the Microsoft Edge Fetch API incorrectly handles a filtered response type, aka "Microsoft Edge Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-8498.

Weakness: CWE-200

Which versions are affected by CVE-2017-8504?

It affects 1 product.

Products include Microsoft Edge.

How do I fix CVE-2017-8504?

No fix has been published for CVE-2017-8504 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-8504 being exploited?

There is no known exploitation of CVE-2017-8504 in the wild and no public exploit code.

All Microsoft Edge vulnerabilities

Sources

Also known as GHSA-hg64-q6m3-wv9w.

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