CVE-2009-0775 Use after free in n/a

What is CVE-2009-0775?

CVE-2009-0775 is a critical use after free 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

Double free vulnerability in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 allows remote attackers to execute arbitrary code via "cloned XUL DOM elements which were linked as a parent and child," which are not properly handled during garbage collection.

Weakness: CWE-399

Which versions are affected by CVE-2009-0775?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird.

How do I fix CVE-2009-0775?

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-2009-0775 being exploited?

There is no known exploitation of CVE-2009-0775 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rgh3-gqjf-4mqv.