pysec - pysec-2024-89

PYSEC-2024-89

Vulnerability from pysec - Published: 2024-09-17 19:15 - Updated: 2024-09-23 21:22

Details

A vulnerability was found in MicroPython 1.23.0. It has been rated as critical. Affected by this issue is the function mpz_as_bytes of the file py/objint.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894. It is recommended to apply a patch to fix this issue. In micropython objint component, converting zero from int to bytes leads to heap buffer-overflow-write at mpz_as_bytes.

Severity ?

7.5 (High)


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

Impacted products

Name	purl
micropython-os	pkg:pypi/micropython-os

Aliases

CVE-2024-8948

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "micropython-os",
        "purl": "pkg:pypi/micropython-os"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "908ab1ceca15ee6fd0ef82ca4cba770a3ec41894"
            }
          ],
          "repo": "https://github.com/micropython/micropython",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.3",
        "0.2.4",
        "0.3",
        "0.3.1",
        "0.4.1",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.6",
        "0.7",
        "0.7.1",
        "0.8"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-8948"
  ],
  "details": "A vulnerability was found in MicroPython 1.23.0. It has been rated as critical. Affected by this issue is the function mpz_as_bytes of the file py/objint.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894. It is recommended to apply a patch to fix this issue. In micropython objint component, converting zero from int to bytes leads to heap buffer-overflow-write at mpz_as_bytes.",
  "id": "PYSEC-2024-89",
  "modified": "2024-09-23T21:22:09.689786+00:00",
  "published": "2024-09-17T19:15:00+00:00",
  "references": [
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.277766"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.277766"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.409317"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/micropython/micropython/issues/13041"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/micropython/micropython/issues/13041"
    },
    {
      "type": "FIX",
      "url": "https://github.com/micropython/micropython/commit/908ab1ceca15ee6fd0ef82ca4cba770a3ec41894"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-8948 (GCVE-0-2024-8948)

Vulnerability from cvelistv5 – Published: 2024-09-17 18:50 – Updated: 2024-09-17 20:07

Summary

Severity ?

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

7.3 (High)


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

7.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/?id.277766	vdb-entrytechnical-description
	https://vuldb.com/?ctiid.277766	signaturepermissions-required
	https://vuldb.com/?submit.409317	third-party-advisory
	https://github.com/micropython/micropython/issues/13041	exploitissue-tracking
	https://github.com/micropython/micropython/commit…	patch

Impacted products

	Vendor	Product	Version
	n/a	MicroPython	Affected: 1.23.0

Credits

qbit (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "micropython",
            "vendor": "micropython",
            "versions": [
              {
                "status": "affected",
                "version": "1.23.0"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-8948",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-17T20:06:28.932333Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-17T20:07:19.189Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "MicroPython",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "1.23.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "qbit (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was found in MicroPython 1.23.0. It has been rated as critical. Affected by this issue is the function mpz_as_bytes of the file py/objint.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894. It is recommended to apply a patch to fix this issue. In micropython objint component, converting zero from int to bytes leads to heap buffer-overflow-write at mpz_as_bytes."
        },
        {
          "lang": "de",
          "value": "Eine kritische Schwachstelle wurde in MicroPython 1.23.0 ausgemacht. Es geht hierbei um die Funktion mpz_as_bytes der Datei py/objint.c. Mittels dem Manipulieren mit unbekannten Daten kann eine heap-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann \u00fcber das Netzwerk angegangen werden. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung. Der Patch wird als 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894 bezeichnet. Als bestm\u00f6gliche Massnahme wird Patching empfohlen."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 7.5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-17T18:50:17.599Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-277766 | MicroPython objint.c mpz_as_bytes heap-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.277766"
        },
        {
          "name": "VDB-277766 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.277766"
        },
        {
          "name": "Submit #409317 | micropython v1.23.0 Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.409317"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/micropython/micropython/issues/13041"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/micropython/micropython/commit/908ab1ceca15ee6fd0ef82ca4cba770a3ec41894"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2024-09-17T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2024-09-17T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2024-09-17T20:55:06.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "MicroPython objint.c mpz_as_bytes heap-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2024-8948",
    "datePublished": "2024-09-17T18:50:17.599Z",
    "dateReserved": "2024-09-17T12:47:17.459Z",
    "dateUpdated": "2024-09-17T20:07:19.189Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

PYSEC-2024-89

CVE-2024-8948 (GCVE-0-2024-8948)

Tags

Sightings

Nomenclature