Vulnerability-Lookup

CNVD-2021-95621

Vulnerability from cnvd - Published: 2021-12-09

Title

Zephyr整数下溢漏洞

Description

Zephyr是用于互联、资源受限的嵌入式设备的小型实时操作系统。 Zephyr 2.4.0及更高版本中的6LoWPAN IPHC标头解压缩存在整数下溢漏洞，攻击者可利用该漏洞导致Pv6解析逻辑中的越界访问。

Severity

高

Patch Name

Zephyr整数下溢漏洞的补丁

Patch Description

Zephyr是用于互联、资源受限的嵌入式设备的小型实时操作系统。 Zephyr 2.4.0及更高版本中的6LoWPAN IPHC标头解压缩存在整数下溢漏洞，攻击者可利用该漏洞导致Pv6解析逻辑中的越界访问。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-3323

Impacted products

Name
Zephyr Zephyr >=2.4.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3323",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3323"
    }
  },
  "description": "Zephyr\u662f\u7528\u4e8e\u4e92\u8054\u3001\u8d44\u6e90\u53d7\u9650\u7684\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684\u5c0f\u578b\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nZephyr 2.4.0\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u76846LoWPAN IPHC\u6807\u5934\u89e3\u538b\u7f29\u5b58\u5728\u6574\u6570\u4e0b\u6ea2\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4Pv6\u89e3\u6790\u903b\u8f91\u4e2d\u7684\u8d8a\u754c\u8bbf\u95ee\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95621",
  "openTime": "2021-12-09",
  "patchDescription": "Zephyr\u662f\u7528\u4e8e\u4e92\u8054\u3001\u8d44\u6e90\u53d7\u9650\u7684\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684\u5c0f\u578b\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nZephyr 2.4.0\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u76846LoWPAN IPHC\u6807\u5934\u89e3\u538b\u7f29\u5b58\u5728\u6574\u6570\u4e0b\u6ea2\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4Pv6\u89e3\u6790\u903b\u8f91\u4e2d\u7684\u8d8a\u754c\u8bbf\u95ee\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Zephyr\u6574\u6570\u4e0b\u6ea2\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Zephyr Zephyr \u003e=2.4.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3323",
  "serverity": "\u9ad8",
  "submitTime": "2021-10-13",
  "title": "Zephyr\u6574\u6570\u4e0b\u6ea2\u6f0f\u6d1e"
}

CVE-2021-3323 (GCVE-0-2021-3323)

Vulnerability from cvelistv5 – Published: 2021-10-12 21:50 – Updated: 2024-09-16 17:07

Title

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr

Summary

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Severity

8.3 (High)


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

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound) (CWE-191)

Assigner

zephyr mitre root Scorecard

References

1 reference

URL	Tags
http://github.com/zephyrproject-rtos/zephyr/secur…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
zephyrproject-rtos	zephyr	Affected: >=2.4.0 , < unspecified (custom)

Date Public

2021-04-14 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:53:17.515Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "zephyr",
          "vendor": "zephyrproject-rtos",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "\u003e=2.4.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-04-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions \u003e= \u003e=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "Integer Underflow (Wrap or Wraparound) (CWE-191)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-12T21:50:16.000Z",
        "orgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
        "shortName": "zephyr"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
        }
      ],
      "source": {
        "defect": [
          "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
        ]
      },
      "title": "Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vulnerabilities@zephyrproject.org",
          "DATE_PUBLIC": "2021-04-14T00:00:00.000Z",
          "ID": "CVE-2021-3323",
          "STATE": "PUBLIC",
          "TITLE": "Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "zephyr",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003e=",
                            "version_value": "\u003e=2.4.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "zephyrproject-rtos"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions \u003e= \u003e=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "environmentalScore": 8.3,
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "temporalScore": 8.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Integer Underflow (Wrap or Wraparound) (CWE-191)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc",
              "refsource": "MISC",
              "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
            }
          ]
        },
        "source": {
          "defect": [
            "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc"
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "e2e69745-5e70-4e92-8431-deb5529a81ad",
    "assignerShortName": "zephyr",
    "cveId": "CVE-2021-3323",
    "datePublished": "2021-10-12T21:50:16.135Z",
    "dateReserved": "2021-01-27T00:00:00.000Z",
    "dateUpdated": "2024-09-16T17:07:54.201Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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

CNVD-2021-95621

CVE-2021-3323 (GCVE-0-2021-3323)

Tags

Sightings

Nomenclature

Related by attack behaviour