CVE-2017-7832 Other in Firefox

Medium 5.3 Published Updated

Attackers can spoof domains in the address bar using Unicode character combinations, bypassing visual security indicators in Firefox.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2017-7832?

CVE-2017-7832 is a medium-severity vulnerability in Mozilla Firefox, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or grave, can be spoofed in the addressbar by the dotless version of 'i' followed by the same accent as a second character with most font sets. This allows for domain spoofing attacks because these combined domain names do not display as punycode. This vulnerability affects Firefox < 57.

Weakness: CWE-20

Which versions are affected by CVE-2017-7832?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2017-7832?

Upgrade to a fixed version.

Is CVE-2017-7832 being exploited?

There is no known exploitation of CVE-2017-7832 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-mg37-fr9j-7cpg, UBUNTU-CVE-2017-7832.

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