CVE-2024-1556 Null dereference in Firefox

What is CVE-2024-1556?

CVE-2024-1556 is a medium-severity vulnerability in Mozilla Firefox, published on 20 Feb 2024. 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

The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *Note:* This issue only affects the application when the profiler is running. This vulnerability affects Firefox < 123.

Weakness: CWE-754

Which versions are affected by CVE-2024-1556?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2024-1556?

Upgrade to a fixed version.

Is CVE-2024-1556 being exploited?

There is no known exploitation of CVE-2024-1556 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-wp8h-p32h-fwvc, UBUNTU-CVE-2024-1556.