PT-2024-18989 · Cef · Cef

Darknavygit · Published 2024-01-12 · Updated 2024-01-22 · CVE-2024-21639

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions CEF (Chromium Embedded Framework) versions prior to the version containing commit 1f55d2e

Description The issue arises from the CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory function not checking the size of the shared memory, leading to an out-of-bounds read outside the sandbox. This is a problem in CEF, a framework for embedding Chromium-based browsers in other applications.

Recommendations For versions prior to the one containing commit 1f55d2e, update to a version that includes the patch commit 1f55d2e to resolve the issue. As a temporary workaround, consider restricting access to the CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory function until a patch is applied.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2024-21639

GHSA-M375-JW5X-X8MG

Affected Products

Cef

References · 8

• 🔥 https://github.com/chromiumembedded/cef/security/advisories/GHSA-m375-jw5x-x8mg · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21639.json · Exploit
• https://github.com/chromiumembedded/cef/commit/1f55d2e12f62cfdfbf9da6968fde2f928982670b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-21639 · Security Note
• https://osv.dev/vulnerability/CVE-2024-21639 · Vendor Advisory
• https://twitter.com/CVEnew/status/1745919645880651877 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1745954546721992958 · Twitter Post
• https://t.me/cvenotify/68240 · Telegram Post