GSD-2021-26706

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.
Aliases
Aliases
CVE-2021-26706
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{
  "GSD": {
    "alias": "CVE-2021-26706",
    "description": "An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.",
    "id": "GSD-2021-26706"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-26706"
      ],
      "details": "An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.",
      "id": "GSD-2021-26706",
      "modified": "2023-12-13T01:23:33.110732Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-26706",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
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              "vendor_name": "n/a"
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker."
          }
        ]
      },
      "problemtype": {
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            "description": [
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                "lang": "eng",
                "value": "n/a"
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://docs.silabs.com/micrium/latest/micrium-common/",
            "refsource": "MISC",
            "url": "https://docs.silabs.com/micrium/latest/micrium-common/"
          },
          {
            "name": "https://micrium.atlassian.net/wiki/spaces/libdoc138/",
            "refsource": "MISC",
            "url": "https://micrium.atlassian.net/wiki/spaces/libdoc138/"
          },
          {
            "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04",
            "refsource": "MISC",
            "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.00:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.01:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.02:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.03:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.04:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.38.05:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:micrium:uc\\/lib:1.39.00:*:*:*:*:*:*:*",
                "cpe_name": [],
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            ],
            "operator": "OR"
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      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-26706"
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        "data_type": "CVE",
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        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-190"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://micrium.atlassian.net/wiki/spaces/libdoc138/",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://micrium.atlassian.net/wiki/spaces/libdoc138/"
            },
            {
              "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04",
              "refsource": "MISC",
              "tags": [
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                "US Government Resource"
              ],
              "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"
            },
            {
              "name": "https://docs.silabs.com/micrium/latest/micrium-common/",
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              "tags": [
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              "url": "https://docs.silabs.com/micrium/latest/micrium-common/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "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": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-02-17T15:43Z",
      "publishedDate": "2022-01-24T01:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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