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...

The vulnerability of the UEFI loader’s shim, which exists due to the lack of measures taken to neutralize special elements, allows a hacker to execute arbitrary code.

The vulnerability of the UEFI loader “shim” exists due to the failure to implement measures to neutralize certain components. Exploiting this vulnerability allows a remote attacker to execute arbitrary code by sending a specially crafted HTTP request...

Huawei EulerOS: Security Advisory for shim (EulerOS-SA-2024-1129)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2024 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Huawei EulerOS: Security Advisory for shim (EulerOS-SA-2024-1113)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2024 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

EulerOS 2.0 SP11 : shim (EulerOS-SA-2024-1129)

According to the versions of the shim package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary:...

EulerOS 2.0 SP11 : shim (EulerOS-SA-2024-1113)

According to the versions of the shim packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary...

CVE-2023-40546

A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a cras...

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-2023-40549

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service. Mitigation There's no available mitigati...

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...

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...

AZL-35278 CVE-2023-40547 affecting package shim-unsigned-x64 for versions less than 15.8-3

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-35254 CVE-2023-40547 affecting package shim for versions less than 15.8-3

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-35267 CVE-2023-40547 affecting package shim-unsigned-aarch64 for versions less than 15.8-3

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...

Remote code execution

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...

CVE-2023-40547 Shim: rce in http boot support may lead to secure boot bypass

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...

CVE-2023-40547

CVE-2023-40547 affects the shim bootloader (shim and shim-unsigned variants) across multiple platforms. The root cause is that the first-stage UEFI boot loader trusts attacker-controlled values when parsing an HTTP response, enabling a remote code execution via a crafted HTTP request during early...

CVE-2023-40547 Shim: rce in http boot support may lead to secure boot bypass

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...

CVE-2023-40547 Shim: rce in http boot support may lead to secure boot bypass

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...