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...

RHEL 8 : shim (RHSA-2024:1873)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1873 advisory. The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...

RHEL 9 : shim update (Important) (RHSA-2024:1876)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1876 advisory. The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...

Important: shim bug fix update

The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments. Security Fixes: shim: RCE in http boot support may lead to Secure Boot bypass CVE-2023-40547 shim: Interger overflow leads to heap buffer overflow in...

RHEL 8 : shim (RHSA-2024:1883)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1883 advisory. The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...

ALSA-2024:1902 Important: shim security update

The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments. Security Fixes: shim: RCE in http boot support may lead to Secure Boot bypass CVE-2023-40547 shim: Interger overflow leads to heap buffer overflow in...

ALSA-2024:1903 Important: shim bug fix update

The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments. Security Fixes: shim: RCE in http boot support may lead to Secure Boot bypass CVE-2023-40547 shim: Interger overflow leads to heap buffer overflow in...

RHEL 9 : shim (RHSA-2024:1835)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1835 advisory. The shim package contains a first stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...

RHEL 8 : shim (RHSA-2024:1834)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1834 advisory. The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...

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...

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...

Important: Red Hat Security Advisory: shim security update

An update for shim is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for ea...

shim: Interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems

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...

shim: Out-of-bounds read printing error messages

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...

shim: Out-of-bounds read in verify_buffer_authenticode() malformed PE file

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...

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...

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...

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...

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...

shim: Out-of-bounds read printing error messages

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...