CVE-2009-0777 Other in n/a

Medium 5.8 Published Updated

Remote attackers can spoof URLs in the location bar by exploiting invisible character decoding, facilitating phishing attacks against browser users.

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
Available

What is CVE-2009-0777?

CVE-2009-0777 is a medium-severity vulnerability in Mozilla Firefox, published on 5 Mar 2009. 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

Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks.

Weakness: CWE-20

Which versions are affected by CVE-2009-0777?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird.

How do I fix CVE-2009-0777?

Upgrade to a fixed version.

Is CVE-2009-0777 being exploited?

There is no known exploitation of CVE-2009-0777 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-9q9q-525p-x46x.

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