suse-su-2023:1863-1
Vulnerability from csaf_suse
Published
2023-04-17 07:34
Modified
2023-04-17 07:34
Summary
Security update for shim

Notes

Title of the patch
Security update for shim
Description of the patch
This update for shim fixes the following issues: - Updated shim signature after shim 15.7 be signed back: signature-sles.x86_64.asc, signature-sles.aarch64.asc (bsc#1198458) - Add POST_PROCESS_PE_FLAGS=-N to the build command in shim.spec to disable the NX compatibility flag when using post-process-pe because grub2 is not ready. (bsc#1205588) - Enable the NX compatibility flag by default. (jsc#PED-127) Update to 15.7 (bsc#1198458) (jsc#PED-127): - Make SBAT variable payload introspectable - Reference MokListRT instead of MokList - Add a link to the test plan in the readme. - [V3] Enable TDX measurement to RTMR register - Discard load-options that start with a NUL - Fixed load_cert_file bugs - Add -malign-double to IA32 compiler flags - pe: Fix image section entry-point validation - make-archive: Build reproducible tarball - mok: remove MokListTrusted from PCR 7 Other fixes: - Support enhance shim measurement to TD RTMR. (jsc#PED-1273) - shim-install: ensure grub.cfg created is not overwritten after installing grub related files - Add logic to shim.spec to only set sbat policy when efivarfs is writeable. (bsc#1201066) - Add logic to shim.spec for detecting --set-sbat-policy option before using mokutil to set sbat policy. (bsc#1202120) - Change the URL in SBAT section to mail:security@suse.de. (bsc#1193282) Update to 15.6 (bsc#1198458): - MokManager: removed Locate graphic output protocol fail error message - shim: implement SBAT verification for the shim_lock protocol - post-process-pe: Fix a missing return code check - Update github actions matrix to be more useful - post-process-pe: Fix format string warnings on 32-bit platforms - Allow MokListTrusted to be enabled by default - Re-add ARM AArch64 support - Use ASCII as fallback if Unicode Box Drawing characters fail - make: don't treat cert.S specially - shim: use SHIM_DEVEL_VERBOSE when built in devel mode - Break out of the inner sbat loop if we find the entry. - Support loading additional certificates - Add support for NX (W^X) mitigations. - Fix preserve_sbat_uefi_variable() logic - SBAT Policy latest should be a one-shot - pe: Fix a buffer overflow when SizeOfRawData > VirtualSize - pe: Perform image verification earlier when loading grub - Update advertised sbat generation number for shim - Update SBAT generation requirements for 05/24/22 - Also avoid CVE-2022-28737 in verify_image() by @vathpela Update to 15.5 (bsc#1198458): - Broken ia32 relocs and an unimportant submodule change. - mok: allocate MOK config table as BootServicesData - Don't call QueryVariableInfo() on EFI 1.10 machines (bsc#1187260) - Relax the check for import_mok_state() (bsc#1185261) - SBAT.md: trivial changes - shim: another attempt to fix load options handling - Add tests for our load options parsing. - arm/aa64: fix the size of .rela* sections - mok: fix potential buffer overrun in import_mok_state - mok: relax the maximum variable size check - Don't unhook ExitBootServices when EBS protection is disabled - fallback: find_boot_option() needs to return the index for the boot entry in optnum - httpboot: Ignore case when checking HTTP headers - Fallback allocation errors - shim: avoid BOOTx64.EFI in message on other architectures - str: remove duplicate parameter check - fallback: add compile option FALLBACK_NONINTERACTIVE - Test mok mirror - Modify sbat.md to help with readability. - csv: detect end of csv file correctly - Specify that the .sbat section is ASCII not UTF-8 - tests: add 'include-fixed' GCC directory to include directories - pe: simplify generate_hash() - Don't make shim abort when TPM log event fails (RHBZ #2002265) - Fallback to default loader if parsed one does not exist - fallback: Fix for BootOrder crash when index returned - Better console checks - docs: update SBAT UEFI variable name - Don't parse load options if invoked from removable media path - fallback: fix fallback not passing arguments of the first boot option - shim: Don't stop forever at 'Secure Boot not enabled' notification - Allocate mokvar table in runtime memory. - Remove post-process-pe on 'make clean' - pe: missing perror argument - CVE-2022-28737: Fixed a buffer overflow when SizeOfRawData > VirtualSize (bsc#1198458) - Add mokutil command to post script for setting sbat policy to latest mode when the SbatPolicy-605dab50-e046-4300-abb6-3dd810dd8b23 is not created. (bsc#1198458) - Updated vendor dbx binary and script (bsc#1198458) - Updated dbx-cert.tar.xz and vendor-dbx-sles.bin for adding SLES-UEFI-SIGN-Certificate-2021-05.crt to vendor dbx list. - Updated dbx-cert.tar.xz and vendor-dbx-opensuse.bin for adding openSUSE-UEFI-SIGN-Certificate-2021-05.crt to vendor dbx list. - Updated vendor-dbx.bin for adding SLES-UEFI-SIGN-Certificate-2021-05.crt and openSUSE-UEFI-SIGN-Certificate-2021-05.crt for testing environment. - Updated generate-vendor-dbx.sh script for generating a vendor-dbx.bin file which includes all .der for testing environment. - avoid buffer overflow when copying data to the MOK config table (bsc#1185232) - Disable exporting vendor-dbx to MokListXRT since writing a large RT variable could crash some machines (bsc#1185261) - ignore the odd LoadOptions length (bsc#1185232) - shim-install: reset def_shim_efi to 'shim.efi' if the given file doesn't exist - relax the maximum variable size check for u-boot (bsc#1185621) - handle ignore_db and user_insecure_mode correctly (bsc#1185441, bsc#1187071) - Split the keys in vendor-dbx.bin to vendor-dbx-sles and vendor-dbx-opensuse for shim-sles and shim-opensuse to reduce the size of MokListXRT (bsc#1185261) + Also update generate-vendor-dbx.sh in dbx-cert.tar.xz
Patchnames
SUSE-2023-1863,SUSE-OpenStack-Cloud-9-2023-1863,SUSE-OpenStack-Cloud-Crowbar-9-2023-1863,SUSE-SLE-SAP-12-SP4-2023-1863,SUSE-SLE-SERVER-12-SP4-ESPOS-2023-1863,SUSE-SLE-SERVER-12-SP4-LTSS-2023-1863,SUSE-SLE-SERVER-12-SP5-2023-1863
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for shim",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for shim fixes the following issues:\n\n- Updated shim signature after shim 15.7 be signed back:\n  signature-sles.x86_64.asc, signature-sles.aarch64.asc (bsc#1198458)\n\n- Add POST_PROCESS_PE_FLAGS=-N to the build command in shim.spec to\n  disable the NX compatibility flag when using post-process-pe because\n  grub2 is not ready. (bsc#1205588)\n\n- Enable the NX compatibility flag by default. (jsc#PED-127) \n\nUpdate to 15.7 (bsc#1198458) (jsc#PED-127):\n\n- Make SBAT variable payload introspectable\n- Reference MokListRT instead of MokList\n- Add a link to the test plan in the readme.\n- [V3] Enable TDX measurement to RTMR register\n- Discard load-options that start with a NUL\n- Fixed load_cert_file bugs\n- Add -malign-double to IA32 compiler flags\n- pe: Fix image section entry-point validation\n- make-archive: Build reproducible tarball\n- mok: remove MokListTrusted from PCR 7\n\nOther fixes:\n\n- Support enhance shim measurement to TD RTMR. (jsc#PED-1273) \n\n- shim-install: ensure grub.cfg created is not overwritten after installing grub related files\n- Add logic to shim.spec to only set sbat policy when efivarfs is writeable.  (bsc#1201066)\n- Add logic to shim.spec for detecting --set-sbat-policy option before using mokutil to set sbat policy. (bsc#1202120)\n- Change the URL in SBAT section to mail:security@suse.de. (bsc#1193282)\n\nUpdate to 15.6 (bsc#1198458):\n\n- MokManager: removed Locate graphic output protocol fail error message\n- shim: implement SBAT verification for the shim_lock protocol\n- post-process-pe: Fix a missing return code check\n- Update github actions matrix to be more useful\n- post-process-pe: Fix format string warnings on 32-bit platforms\n- Allow MokListTrusted to be enabled by default\n- Re-add ARM AArch64 support\n- Use ASCII as fallback if Unicode Box Drawing characters fail\n- make: don\u0027t treat cert.S specially\n- shim: use SHIM_DEVEL_VERBOSE when built in devel mode\n- Break out of the inner sbat loop if we find the entry.\n- Support loading additional certificates\n- Add support for NX (W^X) mitigations.\n- Fix preserve_sbat_uefi_variable() logic\n- SBAT Policy latest should be a one-shot\n- pe: Fix a buffer overflow when SizeOfRawData \u003e VirtualSize\n- pe: Perform image verification earlier when loading grub\n- Update advertised sbat generation number for shim\n- Update SBAT generation requirements for 05/24/22\n- Also avoid CVE-2022-28737 in verify_image() by @vathpela\n\nUpdate to 15.5 (bsc#1198458):\n\n- Broken ia32 relocs and an unimportant submodule change.\n- mok: allocate MOK config table as BootServicesData\n- Don\u0027t call QueryVariableInfo() on EFI 1.10 machines (bsc#1187260)\n- Relax the check for import_mok_state()  (bsc#1185261)\n- SBAT.md: trivial changes\n- shim: another attempt to fix load options handling\n- Add tests for our load options parsing.\n- arm/aa64: fix the size of .rela* sections\n- mok: fix potential buffer overrun in import_mok_state\n- mok: relax the maximum variable size check\n- Don\u0027t unhook ExitBootServices when EBS protection is disabled\n- fallback: find_boot_option() needs to return the index for the boot entry in optnum\n- httpboot: Ignore case when checking HTTP headers\n- Fallback allocation errors\n- shim: avoid BOOTx64.EFI in message on other architectures\n- str: remove duplicate parameter check\n- fallback: add compile option FALLBACK_NONINTERACTIVE\n- Test mok mirror\n- Modify sbat.md to help with readability.\n- csv: detect end of csv file correctly\n- Specify that the .sbat section is ASCII not UTF-8\n- tests: add \u0027include-fixed\u0027 GCC directory to include directories\n- pe: simplify generate_hash()\n- Don\u0027t make shim abort when TPM log event fails (RHBZ #2002265)\n- Fallback to default loader if parsed one does not exist\n- fallback: Fix for BootOrder crash when index returned\n- Better console checks\n- docs: update SBAT UEFI variable name\n- Don\u0027t parse load options if invoked from removable media path\n- fallback: fix fallback not passing arguments of the first boot option\n- shim: Don\u0027t stop forever at \u0027Secure Boot not enabled\u0027 notification\n- Allocate mokvar table in runtime memory.\n- Remove post-process-pe on \u0027make clean\u0027\n- pe: missing perror argument\n\n\n- CVE-2022-28737: Fixed a buffer overflow when SizeOfRawData \u003e VirtualSize (bsc#1198458)\n\n- Add mokutil command to post script for setting sbat policy to latest mode\n  when the SbatPolicy-605dab50-e046-4300-abb6-3dd810dd8b23 is not created.\n  (bsc#1198458)\n\n- Updated vendor dbx binary and script (bsc#1198458)\n\n  - Updated dbx-cert.tar.xz and vendor-dbx-sles.bin for adding\n    SLES-UEFI-SIGN-Certificate-2021-05.crt to vendor dbx list.\n  - Updated dbx-cert.tar.xz and vendor-dbx-opensuse.bin for adding\n    openSUSE-UEFI-SIGN-Certificate-2021-05.crt to vendor dbx list.\n  - Updated vendor-dbx.bin for adding SLES-UEFI-SIGN-Certificate-2021-05.crt\n    and openSUSE-UEFI-SIGN-Certificate-2021-05.crt for testing environment.\n  - Updated generate-vendor-dbx.sh script for generating a vendor-dbx.bin\n    file which includes all .der for testing environment.\n\n- avoid buffer overflow when copying data to the MOK config table (bsc#1185232)\n- Disable exporting vendor-dbx to MokListXRT since writing a large RT variable could crash some machines (bsc#1185261)\n- ignore the odd LoadOptions length (bsc#1185232)\n- shim-install: reset def_shim_efi to \u0027shim.efi\u0027 if the given file doesn\u0027t exist\n- relax the maximum variable size check for u-boot (bsc#1185621)\n- handle ignore_db and user_insecure_mode correctly (bsc#1185441, bsc#1187071)\n\n- Split the keys in vendor-dbx.bin to vendor-dbx-sles and\n  vendor-dbx-opensuse for shim-sles and shim-opensuse to reduce\n  the size of MokListXRT (bsc#1185261) \n  + Also update generate-vendor-dbx.sh in dbx-cert.tar.xz\n",
        "title": "Description of the patch"
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        "category": "details",
        "text": "SUSE-2023-1863,SUSE-OpenStack-Cloud-9-2023-1863,SUSE-OpenStack-Cloud-Crowbar-9-2023-1863,SUSE-SLE-SAP-12-SP4-2023-1863,SUSE-SLE-SERVER-12-SP4-ESPOS-2023-1863,SUSE-SLE-SERVER-12-SP4-LTSS-2023-1863,SUSE-SLE-SERVER-12-SP5-2023-1863",
        "title": "Patchnames"
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      {
        "category": "legal_disclaimer",
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        "title": "Terms of use"
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      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2023:1863-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-February/018050.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1185232",
        "url": "https://bugzilla.suse.com/1185232"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1185261",
        "url": "https://bugzilla.suse.com/1185261"
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        "summary": "SUSE Bug 1185441",
        "url": "https://bugzilla.suse.com/1185441"
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        "summary": "SUSE Bug 1185621",
        "url": "https://bugzilla.suse.com/1185621"
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        "url": "https://bugzilla.suse.com/1198458"
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        "url": "https://bugzilla.suse.com/1201066"
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        "url": "https://bugzilla.suse.com/1202120"
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        "url": "https://bugzilla.suse.com/1205588"
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        "summary": "SUSE CVE CVE-2022-28737 page",
        "url": "https://www.suse.com/security/cve/CVE-2022-28737/"
      }
    ],
    "title": "Security update for shim",
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        "category": "default_component_of",
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  "vulnerabilities": [
    {
      "cve": "CVE-2022-28737",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2022-28737"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "There\u0027s a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Server 12 SP4-ESPOS:shim-15.7-25.24.1.x86_64",
          "SUSE Linux Enterprise Server 12 SP4-LTSS:shim-15.7-25.24.1.x86_64",
          "SUSE Linux Enterprise Server 12 SP5:shim-15.7-25.24.1.x86_64",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP4:shim-15.7-25.24.1.x86_64",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP5:shim-15.7-25.24.1.x86_64",
          "SUSE OpenStack Cloud 9:shim-15.7-25.24.1.x86_64",
          "SUSE OpenStack Cloud Crowbar 9:shim-15.7-25.24.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2022-28737",
          "url": "https://www.suse.com/security/cve/CVE-2022-28737"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1198458 for CVE-2022-28737",
          "url": "https://bugzilla.suse.com/1198458"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1205065 for CVE-2022-28737",
          "url": "https://bugzilla.suse.com/1205065"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1205066 for CVE-2022-28737",
          "url": "https://bugzilla.suse.com/1205066"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1205831 for CVE-2022-28737",
          "url": "https://bugzilla.suse.com/1205831"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Server 12 SP4-ESPOS:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server 12 SP4-LTSS:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server 12 SP5:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 12 SP4:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 12 SP5:shim-15.7-25.24.1.x86_64",
            "SUSE OpenStack Cloud 9:shim-15.7-25.24.1.x86_64",
            "SUSE OpenStack Cloud Crowbar 9:shim-15.7-25.24.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Server 12 SP4-ESPOS:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server 12 SP4-LTSS:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server 12 SP5:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 12 SP4:shim-15.7-25.24.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 12 SP5:shim-15.7-25.24.1.x86_64",
            "SUSE OpenStack Cloud 9:shim-15.7-25.24.1.x86_64",
            "SUSE OpenStack Cloud Crowbar 9:shim-15.7-25.24.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2023-04-17T07:34:56Z",
          "details": "important"
        }
      ],
      "title": "CVE-2022-28737"
    }
  ]
}


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