CVE-2009-1571 Use after free in n/a

Critical 10.0 Published Updated

Remote attackers can execute arbitrary code via use-after-free in the HTML parser during low-memory situations, requiring user interaction.

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-2009-1571?

CVE-2009-1571 is a critical use after free vulnerability in Mozilla Firefox, published on 21 Feb 2010. 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

Use-after-free vulnerability in the HTML parser in Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, Thunderbird before 3.0.2, and SeaMonkey before 2.0.3 allows remote attackers to execute arbitrary code via unspecified method calls that attempt to access freed objects in low-memory situations.

Weakness: CWE-94

Which versions are affected by CVE-2009-1571?

It affects 2 products.

Products include Mozilla Firefox, Mozilla Seamonkey.

How do I fix CVE-2009-1571?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2009-1571 being exploited?

There is no known exploitation of CVE-2009-1571 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-prv5-qjj9-xp4f.

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