CVE-2023-29549 Security feature bypass in Firefox

Medium 6.5 Published Updated

Incorrect realm handling in bind function allows bypassing JavaScript sandbox protections in Firefox and Focus for Android.

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-2023-29549?

CVE-2023-29549 is a medium-severity vulnerability in Mozilla Firefox, published on 2 Jun 2023. 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

Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Weakness: CWE-326

Which versions are affected by CVE-2023-29549?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Firefox Mobile, Mozilla Focus.

How do I fix CVE-2023-29549?

Upgrade to a fixed version.

Is CVE-2023-29549 being exploited?

There is no known exploitation of CVE-2023-29549 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-x5mh-3hvm-9j36, UBUNTU-CVE-2023-29549.

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