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.

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.

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.

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.

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.

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 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.

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.

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)