SUSE-SU-2025:20136-1

Vulnerability from csaf_suse - Published: 2025-03-07 15:31 - Updated: 2025-03-07 15:31
Summary
Security update for pcr-oracle, shim
Severity
Important
Notes
Title of the patch: Security update for pcr-oracle, shim
Description of the patch: 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)
Patchnames: SUSE-SLE-Micro-6.0-225
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2023-40546
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2023-40547
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2023-40548
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2023-40549
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2023-40550
4.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2023-40551
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64 —
Vendor Fix
Threats
Impact moderate
References
To clipboard 

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          "products": [
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-03-07T15:31:20Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-40548"
    },
    {
      "cve": "CVE-2023-40549",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-40549"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "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.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-40549",
          "url": "https://www.suse.com/security/cve/CVE-2023-40549"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215101 for CVE-2023-40549",
          "url": "https://bugzilla.suse.com/1215101"
        }
      ],
      "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 Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-03-07T15:31:20Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-40549"
    },
    {
      "cve": "CVE-2023-40550",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-40550"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "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\u0027s boot phase.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-40550",
          "url": "https://www.suse.com/security/cve/CVE-2023-40550"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215102 for CVE-2023-40550",
          "url": "https://bugzilla.suse.com/1215102"
        }
      ],
      "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 Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-03-07T15:31:20Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-40550"
    },
    {
      "cve": "CVE-2023-40551",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-40551"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "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\u0027s boot phase.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
          "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
          "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-40551",
          "url": "https://www.suse.com/security/cve/CVE-2023-40551"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215103 for CVE-2023-40551",
          "url": "https://bugzilla.suse.com/1215103"
        }
      ],
      "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 Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.aarch64",
            "SUSE Linux Micro 6.0:pcr-oracle-0.4.6-2.1.x86_64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.aarch64",
            "SUSE Linux Micro 6.0:shim-15.8-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-03-07T15:31:20Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-40551"
    }
  ]
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.