Vulnerability-Lookup

FKIE_CVE-2023-4949

Vulnerability from fkie_nvd - Published: 2023-11-10 17:15 - Updated: 2026-06-17 06:38

Severity

8.1 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Summary

An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.

References

	URL	Tags
	cve-coordination@google.com	https://xenbits.xenproject.org/xsa/advisory-443.html	Patch, Third Party Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://xenbits.xenproject.org/xsa/advisory-443.html	Patch, Third Party Advisory

Impacted products

	Vendor	Product	Version
	gnu	grub	*
	xen	xen	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Grub-Legacy",
          "vendor": "Free Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "0.97",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "cve-coordination@google.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:grub:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "281D0519-A24B-4DE6-8475-73AB48A847A9",
              "versionEndIncluding": "0.97",
              "vulnerable": true
            }
          ],
          "negate": false,
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        }
      ]
    },
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              "matchCriteriaId": "BFA1950D-1D9F-4401-AA86-CF3028EFD286",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub\u2019s XFS file system implementation.\n"
    },
    {
      "lang": "es",
      "value": "Un atacante con acceso local a un sistema (ya sea a trav\u00e9s de un disco o una unidad externa) puede presentar una partici\u00f3n XFS modificada a grub-legacy de tal manera que aproveche una corrupci\u00f3n de memoria en la implementaci\u00f3n del sistema de archivos XFS de grub."
    }
  ],
  "id": "CVE-2023-4949",
  "lastModified": "2026-06-17T06:38:57.990",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 6.0,
        "source": "cve-coordination@google.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
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          "options": [
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            },
            {
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            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-03T17:28:54.531573Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-11-10T17:15:07.570",
  "references": [
    {
      "source": "cve-coordination@google.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://xenbits.xenproject.org/xsa/advisory-443.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Third Party Advisory"
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      "url": "https://xenbits.xenproject.org/xsa/advisory-443.html"
    }
  ],
  "sourceIdentifier": "cve-coordination@google.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "cve-coordination@google.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2023-4949 (GCVE-0-2023-4949)

Vulnerability from cvelistv5 – Published: 2023-11-10 16:57 – Updated: 2024-09-03 17:29

Title

Memory Corruption Vulnerability in Grub-Legacy's XFS Implementation

Summary

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-03 17:28 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-190 - Integer Overflow or Wraparound

Assigner

Google Google root

References

1 reference

URL	Tags
https://xenbits.xenproject.org/xsa/advisory-443.html

Impacted products

1 product

Vendor	Product	Version
Free Software Foundation	Grub-Legacy	Affected: 0 , ≤ 0.97 (git)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T07:44:53.355Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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            "url": "https://xenbits.xenproject.org/xsa/advisory-443.html"
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        ],
        "title": "CVE Program Container"
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        "metrics": [
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                "options": [
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                    "Exploitation": "none"
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                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-03T17:28:54.531573Z",
                "version": "2.0.3"
              },
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            }
          }
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          "dateUpdated": "2024-09-03T17:29:10.425Z",
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        },
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    ],
    "cna": {
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          "product": "Grub-Legacy",
          "vendor": "Free Software Foundation",
          "versions": [
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              "lessThanOrEqual": "0.97",
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              "version": "0",
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      ],
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      "impacts": [
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          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
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          ]
        },
        {
          "capecId": "CAPEC-92",
          "descriptions": [
            {
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      "metrics": [
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            "privilegesRequired": "HIGH",
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      "references": [
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "Memory Corruption Vulnerability in Grub-Legacy\u0027s XFS Implementation",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.