CVE-2024-21639 OOB Access in CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory
An out-of-bounds read in CEF's shared memory handling allows attackers to read memory outside the sandbox boundaries.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-21639?
CVE-2024-21639 is a medium-severity memory corruption vulnerability in chromiumembedded cef, published on 12 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
CEF (Chromium Embedded Framework ) is a simple framework for embedding Chromium-based browsers in other applications. `CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory` does not check the size of the shared memory, which leads to out-of-bounds read outside the sandbox. This vulnerability was patched in commit 1f55d2e.
Weakness: CWE-125
Which versions are affected by CVE-2024-21639?
It affects 1 product.
Products include Chromiumembedded Chromium Embedded Framework.
How do I fix CVE-2024-21639?
No fix has been published for CVE-2024-21639 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-21639 being exploited?
There is no known exploitation of CVE-2024-21639 in the wild and no public exploit code.
Other vulnerabilities in chromiumembedded cef
Sources
Also known as GHSA-m375-jw5x-x8mg.