CVE-2023-40551 Shim: out of bounds read when parsing mz binaries

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase...

CVE-2023-40551

CVE-2023-40551 affects the Shim bootloader (MZ binary format) with an out-of-bounds read that can crash the boot process or expose data. Connected advisories confirm this issue across shim-related deployments and list fixes: Debian LTS advisory for shim up to 15.8-1/15.8-1~deb10u1 and IBM securit...

CVE-2023-40550 Shim: out-of-bound read in verify_buffer_sbat()

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase...

CVE-2023-40550 Shim: out-of-bound read in verify_buffer_sbat()

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase...

CVE-2023-40550 Shim: out-of-bound read in verify_buffer_sbat()

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase...

CVE-2023-40550

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase...

DEBIAN-CVE-2023-40548

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 fl...

AZL-34093 CVE-2023-40548 affecting package shim-unsigned-x64 for versions less than 15.8-1

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 fl...

AZL-34197 CVE-2023-40548 affecting package shim for versions less than 15.8-1

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 fl...

AZL-35263 CVE-2023-40548 affecting package shim-unsigned-aarch64 for versions less than 15.8-3

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 fl...

AZL-35255 CVE-2023-40548 affecting package shim for versions less than 15.8-3

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 fl...

AZL-35275 CVE-2023-40548 affecting package shim-unsigned-x64 for versions less than 15.8-3

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 fl...

Heap overflow

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 fl...

Red Hat Shim Security Breach

Red Hat Shim is a simple software package from Red Hat. It is intended to be used as a first-stage boot loader on UEFI systems. A security vulnerability exists in Red Hat Shim. An attacker exploiting this vulnerability could cause memory corruption and possibly lead to a bootstrap crash or data...

Red Hat Shim Security Breach

Red Hat Shim is a simple software package from Red Hat. It is intended to be used as a first-stage boot loader on UEFI systems. A security vulnerability exists in Red Hat Shim that stems from an out-of-bounds read issue, which could result in the exposure of sensitive data during the system boot...

CVE-2023-40550

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase...

CVE-2023-40551

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase...

AZL-33895 CVE-2023-40547 affecting package shim-unsigned-x64 for versions less than 15.8-1

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete...

AZL-34030 CVE-2023-40547 affecting package shim for versions less than 15.8-1

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete...

DEBIAN-CVE-2023-40547

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete...