Vulnerability from csaf_suse
Published
2023-10-16 09:32
Modified
2023-10-16 09:32
Summary
Security update for grub2

Notes

Title of the patch
Security update for grub2
Description of the patch
This update for grub2 fixes the following issues: Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. (bsc#1215935) - CVE-2023-4693: Fixed an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information. (bsc#1215936) Other fixes: - Fix 'command not found' error of grub2-once (bsc#1204563, bsc#1215382)
Patchnames
SUSE-2023-4085,SUSE-SLE-SERVER-12-SP5-2023-4085
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 

{
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            text: "This update for grub2 fixes the following issues:\n\nSecurity fixes:\n- CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. (bsc#1215935)\n- CVE-2023-4693: Fixed an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information. (bsc#1215936)\n\nOther fixes:\n- Fix 'command not found' error of grub2-once (bsc#1204563, bsc#1215382)\n",
            title: "Description of the patch",
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            title: "Terms of use",
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      publisher: {
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               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP5:grub2-x86_64-efi-2.02-169.1.x86_64",
            },
            product_reference: "grub2-x86_64-efi-2.02-169.1.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP5",
         },
         {
            category: "default_component_of",
            full_product_name: {
               name: "grub2-x86_64-xen-2.02-169.1.noarch as component of SUSE Linux Enterprise Server for SAP Applications 12 SP5",
               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP5:grub2-x86_64-xen-2.02-169.1.noarch",
            },
            product_reference: "grub2-x86_64-xen-2.02-169.1.noarch",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP5",
         },
      ],
   },
   vulnerabilities: [
      {
         cve: "CVE-2023-4692",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2023-4692",
            },
         ],
         notes: [
            {
               category: "general",
               text: "An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
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            ],
         },
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            {
               category: "external",
               summary: "CVE-2023-4692",
               url: "https://www.suse.com/security/cve/CVE-2023-4692",
            },
            {
               category: "external",
               summary: "SUSE Bug 1215935 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1215935",
            },
            {
               category: "external",
               summary: "SUSE Bug 1217434 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1217434",
            },
            {
               category: "external",
               summary: "SUSE Bug 1217555 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1217555",
            },
            {
               category: "external",
               summary: "SUSE Bug 1219472 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1219472",
            },
            {
               category: "external",
               summary: "SUSE Bug 1219709 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1219709",
            },
            {
               category: "external",
               summary: "SUSE Bug 1221589 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1221589",
            },
            {
               category: "external",
               summary: "SUSE Bug 1227915 for CVE-2023-4692",
               url: "https://bugzilla.suse.com/1227915",
            },
         ],
         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: [
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                  "SUSE Linux Enterprise Server for SAP Applications 12 SP5:grub2-x86_64-xen-2.02-169.1.noarch",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 7.8,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
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               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2023-10-16T09:32:02Z",
               details: "important",
            },
         ],
         title: "CVE-2023-4692",
      },
      {
         cve: "CVE-2023-4693",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2023-4693",
            },
         ],
         notes: [
            {
               category: "general",
               text: "An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.",
               title: "CVE description",
            },
         ],
         product_status: {
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               url: "https://www.suse.com/security/cve/CVE-2023-4693",
            },
            {
               category: "external",
               summary: "SUSE Bug 1215936 for CVE-2023-4693",
               url: "https://bugzilla.suse.com/1215936",
            },
         ],
         remediations: [
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               category: "vendor_fix",
               details: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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            {
               cvss_v3: {
                  baseScore: 5.5,
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               },
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                  "SUSE Linux Enterprise Server for SAP Applications 12 SP5:grub2-x86_64-efi-2.02-169.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP5:grub2-x86_64-xen-2.02-169.1.noarch",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2023-10-16T09:32:02Z",
               details: "moderate",
            },
         ],
         title: "CVE-2023-4693",
      },
   ],
}


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Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.