Shim Shady (CVE-2023-40527): A Bootloader Vulnerability Story

Unveiling CVE-2023-40547 – Safeguarding Systems from Critical Shim Vulnerability

A vulnerability tracked as CVE-2023-40547 impacts shim, a critical piece of software used by most Linux distributions to support UEFI Secure Boot.

Discovered and reported by Bill Demirkapi at Microsoft’s Security Response Center, this particular vulnerability stems from HTTP protocol handling, leading to an out-of-bounds write and potentially complete system compromise.

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