CVE-2024-7525 Security feature bypass in Firefox

Critical 9.1 Published Updated

A web extension with minimal permissions could use StreamFilter to read and modify response bodies on any site, bypassing security restrictions.

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

What is CVE-2024-7525?

CVE-2024-7525 is a critical vulnerability in Mozilla Firefox, published on 6 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

It was possible for a web extension with minimal permissions to create a `StreamFilter` which could be used to read and modify the response body of requests on any site. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

Weakness: CWE-276, CWE-284

Which versions are affected by CVE-2024-7525?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.

How do I fix CVE-2024-7525?

Upgrade to a fixed version.

Is CVE-2024-7525 being exploited?

There is no known exploitation of CVE-2024-7525 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as DEBIAN-CVE-2024-7525, GHSA-7369-x5q2-rh2m, UBUNTU-CVE-2024-7525.

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