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CentOS Linux: CVE-2023-40548: Important: shim security update (CESA-2024:1959)

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CentOS Linux: CVE-2023-40548: Important: shim security update (CESA-2024:1959)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
01/29/2024
Created
04/24/2024
Added
04/24/2024
Modified
04/26/2024

Description

A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.

Solution(s)

  • centos-upgrade-mokutil
  • centos-upgrade-mokutil-debuginfo
  • centos-upgrade-shim-ia32
  • centos-upgrade-shim-unsigned-ia32
  • centos-upgrade-shim-unsigned-x64
  • centos-upgrade-shim-x64

References

  • CVE-2023-40548

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