GSD-2021-21280

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.
Aliases
Aliases
CVE-2021-21280
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-21280",
    "description": "Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.",
    "id": "GSD-2021-21280"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21280"
      ],
      "details": "Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.",
      "id": "GSD-2021-21280",
      "modified": "2023-12-13T01:23:10.998013Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2021-21280",
        "STATE": "PUBLIC",
        "TITLE": "Out-of-bounds write when processing 6LoWPAN extension headers"
      },
      "affects": {
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          "vendor_data": [
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              "product": {
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                    "version": {
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          }
        ]
      },
      "impact": {
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          "attackVector": "NETWORK",
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          "baseScore": 8.6,
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          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
          "version": "3.1"
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                "value": "CWE-787: Out-of-bounds Write"
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592",
            "refsource": "CONFIRM",
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          },
          {
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            "refsource": "MISC",
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          }
        ]
      },
      "source": {
        "advisory": "GHSA-r768-hrhf-v592",
        "discovery": "UNKNOWN"
      }
    },
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*",
                "cpe_name": [],
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            }
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      },
      "impact": {
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
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          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-06-22T19:25Z",
      "publishedDate": "2021-06-18T21:15Z"
    }
  }
}


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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.
  • 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.
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  • 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.



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