CVE-2024-21639

Public Exploit
OOB Access in CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory github.com
Affected: chromiumembedded cef
Published at:
Updated at:

References

Link Tags
https://github.com/chromiumembedded/cef/security/advisories/GHSA-m375-jw5x-x8mg vendor advisory exploit
https://github.com/chromiumembedded/cef/commit/1f55d2e12f62cfdfbf9da6968fde2f928982670b patch

Frequently Asked Questions

What is the severity of CVE-2024-21639?
CVE-2024-21639 has been scored as a medium severity vulnerability.
How to fix CVE-2024-21639?
To fix CVE-2024-21639, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-21639 being actively exploited in the wild?
It is possible that CVE-2024-21639 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-21639?
CVE-2024-21639 affects chromiumembedded cef.
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