Vulnerability-Lookup

CNVD-2022-18220

Vulnerability from cnvd - Published: 2022-03-10

Title

Libmobi越界读取漏洞

Description

Libmobi是一个C库。用于处理 Mobipocket/Kindle (MOBI) 电子书格式文档。 Libmobi存在越界读取漏洞，该漏洞源于程序容易受到使用超出范围指针偏移的影响，攻击者可利用该漏洞读取超出缓冲区大小的内存信息。

Severity

中

Patch Name

Libmobi越界读取漏洞的补丁

Patch Description

Libmobi是一个C库。用于处理 Mobipocket/Kindle (MOBI) 电子书格式文档。 Libmobi存在越界读取漏洞，该漏洞源于程序容易受到使用超出范围指针偏移的影响，攻击者可利用该漏洞读取超出缓冲区大小的内存信息。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/bfabiszewski/libmobi

Reference

https://github.com/bfabiszewski/libmobi

Impacted products

Name
Libmobi Libmobi

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3889",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3889"
    }
  },
  "description": "Libmobi\u662f\u4e00\u4e2aC\u5e93\u3002\u7528\u4e8e\u5904\u7406 Mobipocket/Kindle (MOBI) \u7535\u5b50\u4e66\u683c\u5f0f\u6587\u6863\u3002\n\nLibmobi\u5b58\u5728\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bb9\u6613\u53d7\u5230\u4f7f\u7528\u8d85\u51fa\u8303\u56f4\u6307\u9488\u504f\u79fb\u7684\u5f71\u54cd\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u8d85\u51fa\u7f13\u51b2\u533a\u5927\u5c0f\u7684\u5185\u5b58\u4fe1\u606f\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/bfabiszewski/libmobi",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-18220",
  "openTime": "2022-03-10",
  "patchDescription": "Libmobi\u662f\u4e00\u4e2aC\u5e93\u3002\u7528\u4e8e\u5904\u7406 Mobipocket/Kindle (MOBI) \u7535\u5b50\u4e66\u683c\u5f0f\u6587\u6863\u3002\r\n\r\nLibmobi\u5b58\u5728\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bb9\u6613\u53d7\u5230\u4f7f\u7528\u8d85\u51fa\u8303\u56f4\u6307\u9488\u504f\u79fb\u7684\u5f71\u54cd\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u8d85\u51fa\u7f13\u51b2\u533a\u5927\u5c0f\u7684\u5185\u5b58\u4fe1\u606f\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": "Libmobi\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Libmobi Libmobi"
  },
  "referenceLink": "https://github.com/bfabiszewski/libmobi",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-22",
  "title": "Libmobi\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e"
}

CVE-2021-3889 (GCVE-0-2021-3889)

Vulnerability from cvelistv5 – Published: 2021-10-19 12:30 – Updated: 2024-08-03 17:09

Title

Use of Out-of-range Pointer Offset in bfabiszewski/libmobi

Summary

libmobi is vulnerable to Use of Out-of-range Pointer Offset

Severity

7.1 (High)


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

CWE

CWE-823 - Use of Out-of-range Pointer Offset

Assigner

@huntrdev

References

2 references

URL	Tags
https://github.com/bfabiszewski/libmobi/commit/be…	x_refsource_MISC
https://huntr.dev/bounties/efb3e261-3f7d-4a45-811…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
bfabiszewski	bfabiszewski/libmobi	Affected: unspecified , < 0.8 (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:09.609Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bfabiszewski/libmobi/commit/bec783e6212439a335ba6e8df7ab8ed610ca9a21"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/efb3e261-3f7d-4a45-8114-e0ace6b21516"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "bfabiszewski/libmobi",
          "vendor": "bfabiszewski",
          "versions": [
            {
              "lessThan": "0.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-19T12:30:38.000Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntrdev"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/bfabiszewski/libmobi/commit/bec783e6212439a335ba6e8df7ab8ed610ca9a21"
        },
        {
          "tags": [
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          ],
          "url": "https://huntr.dev/bounties/efb3e261-3f7d-4a45-8114-e0ace6b21516"
        }
      ],
      "source": {
        "advisory": "efb3e261-3f7d-4a45-8114-e0ace6b21516",
        "discovery": "EXTERNAL"
      },
      "title": "Use of Out-of-range Pointer Offset in bfabiszewski/libmobi",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@huntr.dev",
          "ID": "CVE-2021-3889",
          "STATE": "PUBLIC",
          "TITLE": "Use of Out-of-range Pointer Offset in bfabiszewski/libmobi"
        },
        "affects": {
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            "vendor_data": [
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                  "product_data": [
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                      "product_name": "bfabiszewski/libmobi",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "0.8"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "bfabiszewski"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "libmobi is vulnerable to Use of Out-of-range Pointer Offset"
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        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
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        "problemtype": {
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            },
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    "assignerShortName": "@huntrdev",
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    "datePublished": "2021-10-19T12:30:38.000Z",
    "dateReserved": "2021-10-15T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:09:09.609Z",
    "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.

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.