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.

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.

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.

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.

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.

Initial UEFI bootloader that handles chaining to a trusted full \ bootloader under secure boot environments.

Security Fix(es):

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 system compromise.(CVE-2023-40547)

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.(CVE-2023-40548)

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.(CVE-2023-40549)

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)

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)

Initial UEFI bootloader that handles chaining to a trusted full \ bootloader under secure boot environments.

Security Fix(es):

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 system compromise.(CVE-2023-40547)

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.(CVE-2023-40548)

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.(CVE-2023-40549)

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)

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)

Initial UEFI bootloader that handles chaining to a trusted full \ bootloader under secure boot environments.

Security Fix(es):

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 system compromise.(CVE-2023-40547)

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.(CVE-2023-40548)

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.(CVE-2023-40549)

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)

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)

Initial UEFI bootloader that handles chaining to a trusted full \ bootloader under secure boot environments.

Security Fix(es):

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 system compromise.(CVE-2023-40547)

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.(CVE-2023-40548)

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.(CVE-2023-40549)

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)

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)

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.

The shim package contains a first-stage UEFI boot loader that handles chaining to 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 verify_sbat_section on 32-bits systems (CVE-2023-40548)
• shim: Out-of-bounds read printing error messages (CVE-2023-40546)
• shim: Out-of-bounds read in verify_buffer_authenticode() malformed PE file (CVE-2023-40549)
• shim: Out-of-bound read in verify_buffer_sbat() (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 CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The shim package contains a first-stage UEFI boot loader that handles chaining to 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 verify_sbat_section on 32-bits systems (CVE-2023-40548)
• shim: Out-of-bounds read printing error messages (CVE-2023-40546)
• shim: Out-of-bounds read in verify_buffer_authenticode() malformed PE file (CVE-2023-40549)
• shim: Out-of-bound read in verify_buffer_sbat() (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 CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Make this package installable only on a system having Cloudlinux signed components: grub2 and kernel
• Update to shim-15.8 and fix the following CVEs: Resolves: CVE-2023-40546 Resolves: CVE-2023-40547 Resolves: СVE-2023-40548 Resolves: СVE-2023-40549 Resolves: CVE-2023-40550 Resolves: CVE-2023-40551

• Make this package installable only on a system having Cloudlinux signed components: grub2 and kernel
• Update to shim-15.8 and fix the following CVEs: Resolves: CVE-2023-40546 Resolves: CVE-2023-40547 Resolves: СVE-2023-40548 Resolves: СVE-2023-40549 Resolves: CVE-2023-40550 Resolves: CVE-2023-40551

• Make this package installable on a system having a either Centos or Cloudlinux signed kernel
• Update to shim-15.8 and fix the following CVEs: Resolves: CVE-2023-40546 Resolves: CVE-2023-40547 Resolves: СVE-2023-40548 Resolves: СVE-2023-40549 Resolves: CVE-2023-40550 Resolves: CVE-2023-40551

• Make this package installable only on a system having Cloudlinux signed components: grub2 and kernel
• Update to shim-15.8 and fix the following CVEs: Resolves: CVE-2023-40546 Resolves: CVE-2023-40547 Resolves: СVE-2023-40548 Resolves: СVE-2023-40549 Resolves: CVE-2023-40550 Resolves: CVE-2023-40551

• Make this package installable only on a system having a either Almalinux or Cloudlinux signed kernel
• Update to shim-15.8 and fix the following CVEs: Resolves: CVE-2023-40546 Resolves: CVE-2023-40547 Resolves: СVE-2023-40548 Resolves: СVE-2023-40549 Resolves: CVE-2023-40550 Resolves: CVE-2023-40551

This update for shim fixes the following issues:

• Update shim-install to set the TPM2 SRK algorithm (bsc#1213945)
• Limit the requirement of fde-tpm-helper-macros to the distro with suse_version 1600 and above (bsc#1219460)

Update to version 15.8:

Security issues fixed:

• mok: fix LogError() invocation (bsc#1215099,CVE-2023-40546)
• avoid incorrectly trusting HTTP headers (bsc#1215098,CVE-2023-40547)
• Fix integer overflow on SBAT section size on 32-bit system (bsc#1215100,CVE-2023-40548)
• Authenticode: verify that the signature header is in bounds (bsc#1215101,CVE-2023-40549)
• pe: Fix an out-of-bound read in verify_buffer_sbat() (bsc#1215102,CVE-2023-40550)
• pe-relocate: Fix bounds check for MZ binaries (bsc#1215103,CVE-2023-40551)

The NX flag is disable which is same as the default value of shim-15.8, hence, not need to enable it by this patch now.

• Generate dbx during build so we don't include binary files in sources

• Don't require grub so shim can still be used with systemd-boot

• Update shim-install to fix boot failure of ext4 root file system on RAID10 (bsc#1205855)

• Adopt the macros from fde-tpm-helper-macros to update the signature in the sealed key after a bootloader upgrade

• Update shim-install to amend full disk encryption support

  • Adopt TPM 2.0 Key File for grub2 TPM 2.0 protector
  • Use the long name to specify the grub2 key protector
  • cryptodisk: support TPM authorized policies
  • Do not use tpm_record_pcrs unless the command is in command.lst

• Removed POST_PROCESS_PE_FLAGS=-N from the build command in shim.spec to enable the NX compatibility flag when using post-process-pe after discussed with grub2 experts in mail. It's useful for further development and testing. (bsc#1205588)

This update for shim fixes the following issues:

• Update shim-install to set the TPM2 SRK algorithm (bsc#1213945)
• Limit the requirement of fde-tpm-helper-macros to the distro with suse_version 1600 and above (bsc#1219460)

Update to version 15.8:

Security issues fixed:

• mok: fix LogError() invocation (bsc#1215099,CVE-2023-40546)
• avoid incorrectly trusting HTTP headers (bsc#1215098,CVE-2023-40547)
• Fix integer overflow on SBAT section size on 32-bit system (bsc#1215100,CVE-2023-40548)
• Authenticode: verify that the signature header is in bounds (bsc#1215101,CVE-2023-40549)
• pe: Fix an out-of-bound read in verify_buffer_sbat() (bsc#1215102,CVE-2023-40550)
• pe-relocate: Fix bounds check for MZ binaries (bsc#1215103,CVE-2023-40551)

The NX flag is disable which is same as the default value of shim-15.8, hence, not need to enable it by this patch now.

• Generate dbx during build so we don't include binary files in sources

• Don't require grub so shim can still be used with systemd-boot

• Update shim-install to fix boot failure of ext4 root file system on RAID10 (bsc#1205855)

• Adopt the macros from fde-tpm-helper-macros to update the signature in the sealed key after a bootloader upgrade

• Update shim-install to amend full disk encryption support

  • Adopt TPM 2.0 Key File for grub2 TPM 2.0 protector
  • Use the long name to specify the grub2 key protector
  • cryptodisk: support TPM authorized policies
  • Do not use tpm_record_pcrs unless the command is in command.lst

• Removed POST_PROCESS_PE_FLAGS=-N from the build command in shim.spec to enable the NX compatibility flag when using post-process-pe after discussed with grub2 experts in mail. It's useful for further development and testing. (bsc#1205588)

This update for shim fixes the following issues:

• Update shim-install to set the TPM2 SRK algorithm (bsc#1213945)
• Limit the requirement of fde-tpm-helper-macros to the distro with suse_version 1600 and above (bsc#1219460)

Update to version 15.8:

Security issues fixed:

• mok: fix LogError() invocation (bsc#1215099,CVE-2023-40546)
• avoid incorrectly trusting HTTP headers (bsc#1215098,CVE-2023-40547)
• Fix integer overflow on SBAT section size on 32-bit system (bsc#1215100,CVE-2023-40548)
• Authenticode: verify that the signature header is in bounds (bsc#1215101,CVE-2023-40549)
• pe: Fix an out-of-bound read in verify_buffer_sbat() (bsc#1215102,CVE-2023-40550)
• pe-relocate: Fix bounds check for MZ binaries (bsc#1215103,CVE-2023-40551)

The NX flag is disable which is same as the default value of shim-15.8, hence, not need to enable it by this patch now.

• Generate dbx during build so we don't include binary files in sources

• Don't require grub so shim can still be used with systemd-boot

• Update shim-install to fix boot failure of ext4 root file system on RAID10 (bsc#1205855)

• Adopt the macros from fde-tpm-helper-macros to update the signature in the sealed key after a bootloader upgrade

• Update shim-install to amend full disk encryption support

  • Adopt TPM 2.0 Key File for grub2 TPM 2.0 protector
  • Use the long name to specify the grub2 key protector
  • cryptodisk: support TPM authorized policies
  • Do not use tpm_record_pcrs unless the command is in command.lst

• Removed POST_PROCESS_PE_FLAGS=-N from the build command in shim.spec to enable the NX compatibility flag when using post-process-pe after discussed with grub2 experts in mail. It's useful for further development and testing. (bsc#1205588)

This update for pcr-oracle, shim fixes the following issues:

pcr-oracle:

• predict SbatLevelRT for the next boot (bsc#1230316)

shim was updated to version 15.8:

• Update shim-install to use the 'removable' way for encrypted SL-Micro images (bsc#1230316)
  • Always use the removable way for SL-Micro
  • Limit the removable option to encrypted SL-Micro

Security issues fixed:

• mok: fix LogError() invocation (bsc#1215099,CVE-2023-40546)
• avoid incorrectly trusting HTTP headers (bsc#1215098,CVE-2023-40547)
• Fix integer overflow on SBAT section size on 32-bit system (bsc#1215100,CVE-2023-40548)
• Authenticode: verify that the signature header is in bounds (bsc#1215101,CVE-2023-40549)
• pe: Fix an out-of-bound read in verify_buffer_sbat() (bsc#1215102,CVE-2023-40550)
• pe-relocate: Fix bounds check for MZ binaries (bsc#1215103,CVE-2023-40551)