CVE-2021-4327 SerenityOS TypedArray.cpp initialize_typed_array_from_array_buffer integer overflow

Medium 5.5 Published Updated

An integer overflow in SerenityOS's JavaScript engine allows attackers to potentially execute arbitrary code or escalate privileges.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-4327?

CVE-2021-4327 is a medium-severity vulnerability in SerenityOS, published on 1 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was found in SerenityOS. It has been rated as critical. Affected by this issue is the function initialize_typed_array_from_array_buffer in the library Userland/Libraries/LibJS/Runtime/TypedArray.cpp. The manipulation leads to integer overflow. The exploit has been disclosed to the public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The patch is identified as f6c6047e49f1517778f5565681fb64750b14bf60. It is recommended to apply a patch to fix this issue. VDB-222074 is the identifier assigned to this vulnerability.

Weakness: CWE-190

Which versions are affected by CVE-2021-4327?

It affects 1 product.

Products include Serenityos Serenityos.

How do I fix CVE-2021-4327?

No fix has been published for CVE-2021-4327 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-4327 being exploited?

There is no known exploitation of CVE-2021-4327 in the wild and no public exploit code.

Sources

Also known as GHSA-mh6x-wxv2-qm6f.

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