MSRC_CVE-2021-4048

Vulnerability from csaf_microsoft - Published: 2021-12-02 00:00 - Updated: 2022-01-19 00:00
Summary
An out-of-bounds read flaw was found in the CLARRV DLARRV SLARRV and ZLARRV functions in lapack through version 3.10.0 as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2021-4048 An out-of-bounds read flaw was found in the CLARRV DLARRV SLARRV and ZLARRV functions in lapack through version 3.10.0 as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-4048.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "An out-of-bounds read flaw was found in the CLARRV DLARRV SLARRV and ZLARRV functions in lapack through version 3.10.0 as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory.",
    "tracking": {
      "current_release_date": "2022-01-19T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T22:29:46.218Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2021-4048",
      "initial_release_date": "2021-12-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2021-12-14T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2021-12-16T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added lapack to CBL-Mariner 2.0"
        },
        {
          "date": "2022-01-19T00:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added openblas to CBL-Mariner 2.0"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
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          {
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            ],
            "category": "product_name",
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          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 lapack 3.8.0-4",
                "product": {
                  "name": "\u003ccm1 lapack 3.8.0-4",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 lapack 3.8.0-4",
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                  "name": "cm1 lapack 3.8.0-4",
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                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 lapack 3.10.0-6",
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                  "name": "\u003ccbl2 lapack 3.10.0-6",
                  "product_id": "1"
                }
              },
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                "category": "product_version",
                "name": "cbl2 lapack 3.10.0-6",
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            ],
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              },
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      },
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    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-4048",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
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          "18941-17086",
          "18942-17086"
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        "known_affected": [
          "16820-3",
          "17086-2",
          "17086-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2021-4048 An out-of-bounds read flaw was found in the CLARRV DLARRV SLARRV and ZLARRV functions in lapack through version 3.10.0 as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-4048.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-12-14T00:00:00.000Z",
          "details": "3.8.0-4:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-3"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2021-12-14T00:00:00.000Z",
          "details": "0.3.21-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2021-12-14T00:00:00.000Z",
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          "product_ids": [
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-3",
            "17086-2",
            "17086-1"
          ]
        }
      ],
      "title": "An out-of-bounds read flaw was found in the CLARRV DLARRV SLARRV and ZLARRV functions in lapack through version 3.10.0 as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory."
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.