Vulnerability-Lookup

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

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.

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	CPE status
Free Software Foundation	Grub-Legacy	Affected: 0 , ≤ 0.97 (git)	guessed

Show details on NVD website

JSON

To clipboard

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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

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

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GSD-2023-4949

Vulnerability from gsd - Updated: 2023-12-13 01:20

Details

Aliases

CVE-2023-4949

Aliases

CVE-2023-4949

JSON

To clipboard

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    "id": "GSD-2023-4949"
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                "cweId": "CWE-190",
                "lang": "eng",
                "value": "CWE-190 Integer Overflow or Wraparound"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://xenbits.xenproject.org/xsa/advisory-443.html",
            "refsource": "MISC",
            "url": "https://xenbits.xenproject.org/xsa/advisory-443.html"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:gnu:grub:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "0.97",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@google.com",
          "ID": "CVE-2023-4949"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "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"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-787"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://xenbits.xenproject.org/xsa/advisory-443.html",
              "refsource": "",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://xenbits.xenproject.org/xsa/advisory-443.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2023-11-20T19:37Z",
      "publishedDate": "2023-11-10T17:15Z"
    }
  }
}

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.

Action not permitted

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

FKIE_CVE-2023-4949

GSD-2023-4949

Tags

Sightings

Nomenclature

Related by attack behaviour