RHSA-2024:1883: Important: shim security update

The shim package contains a first-stage UEFI boot loader that handles chainingto a trusted full boot loader under secure boot environments.Security Fix(es): shim: RCE in http boot support may lead to Secure Boot bypass (CVE-2023-40547) shim: Interger overflow leads to heap buffer overflow in verifysbatsection on 32-bits systems (CVE-2023-40548) shim: Out-of-bounds read printing error messages (CVE-2023-40546) shim: Out-of-bounds read in verifybufferauthenticode() malformed PE file (CVE-2023-40549) shim: Out-of-bound read in verifybuffersbat() (CVE-2023-40550) shim: out of bounds read when parsing MZ binaries (CVE-2023-40551) For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat