Vulnerability-Lookup

CNVD-2021-67506

Vulnerability from cnvd - Published: 2021-09-02

Title

Squashfs-Tools存在未明漏洞

Description

Squashfs-Tools是一个开源软件包。 Squashfs-Tools4.5版本存在安全漏洞，该漏洞源于在软件中的unsquash-1.c中的squashfs_opendir函数负责存储目录条目中的文件名，然后unsquashfs使用它在unsquash期间创建新文件。函数文件名操作对于目标目录外的遍历并不进行验证，攻击者可利用该漏洞将文件名被允许写入到目标目录外的位置。

Severity

高

Patch Name

Squashfs-Tools存在未明漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/plougher/squashfs-tools/commit/79b5a555058eef4e1e7ff220c344d39f8cd09646

Reference

https://github.com/plougher/squashfs-tools/issues/72

Impacted products

Name
Squashfs-Tools Squashfs-Tools 4.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-40153"
    }
  },
  "description": "Squashfs-Tools\u662f\u4e00\u4e2a\u5f00\u6e90\u8f6f\u4ef6\u5305\u3002\n\nSquashfs-Tools4.5\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u8f6f\u4ef6\u4e2d\u7684unsquash-1.c\u4e2d\u7684squashfs_opendir\u51fd\u6570\u8d1f\u8d23\u5b58\u50a8\u76ee\u5f55\u6761\u76ee\u4e2d\u7684\u6587\u4ef6\u540d\uff0c\u7136\u540eunsquashfs\u4f7f\u7528\u5b83\u5728unsquash\u671f\u95f4\u521b\u5efa\u65b0\u6587\u4ef6\u3002\u51fd\u6570\u6587\u4ef6\u540d\u64cd\u4f5c\u5bf9\u4e8e\u76ee\u6807\u76ee\u5f55\u5916\u7684\u904d\u5386\u5e76\u4e0d\u8fdb\u884c\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u6587\u4ef6\u540d\u88ab\u5141\u8bb8\u5199\u5165\u5230\u76ee\u6807\u76ee\u5f55\u5916\u7684\u4f4d\u7f6e\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/plougher/squashfs-tools/commit/79b5a555058eef4e1e7ff220c344d39f8cd09646",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-67506",
  "openTime": "2021-09-02",
  "patchDescription": "Squashfs-Tools\u662f\u4e00\u4e2a\u5f00\u6e90\u8f6f\u4ef6\u5305\u3002\r\n\r\nSquashfs-Tools4.5\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u8f6f\u4ef6\u4e2d\u7684unsquash-1.c\u4e2d\u7684squashfs_opendir\u51fd\u6570\u8d1f\u8d23\u5b58\u50a8\u76ee\u5f55\u6761\u76ee\u4e2d\u7684\u6587\u4ef6\u540d\uff0c\u7136\u540eunsquashfs\u4f7f\u7528\u5b83\u5728unsquash\u671f\u95f4\u521b\u5efa\u65b0\u6587\u4ef6\u3002\u51fd\u6570\u6587\u4ef6\u540d\u64cd\u4f5c\u5bf9\u4e8e\u76ee\u6807\u76ee\u5f55\u5916\u7684\u904d\u5386\u5e76\u4e0d\u8fdb\u884c\u9a8c\u8bc1\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u6587\u4ef6\u540d\u88ab\u5141\u8bb8\u5199\u5165\u5230\u76ee\u6807\u76ee\u5f55\u5916\u7684\u4f4d\u7f6e\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": "Squashfs-Tools\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Squashfs-Tools Squashfs-Tools 4.5"
  },
  "referenceLink": "https://github.com/plougher/squashfs-tools/issues/72",
  "serverity": "\u9ad8",
  "submitTime": "2021-08-31",
  "title": "Squashfs-Tools\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2021-40153 (GCVE-0-2021-40153)

Vulnerability from cvelistv5 – Published: 2021-08-27 00:00 – Updated: 2024-08-04 02:27

Summary

squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2325 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/plougher/squashfs-tools/commit…
https://github.com/plougher/squashfs-tools/issues/72
https://bugs.launchpad.net/ubuntu/+source/squashf…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://www.debian.org/security/2021/dsa-4967	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202305-29	vendor-advisory

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:27:31.648Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://github.com/plougher/squashfs-tools/commit/79b5a555058eef4e1e7ff220c344d39f8cd09646"
          },
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            "tags": [
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            "url": "https://github.com/plougher/squashfs-tools/issues/72"
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            "url": "https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1941790"
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            "name": "FEDORA-2021-cdbd827c1e",
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              "vendor-advisory",
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          },
          {
            "name": "[debian-lts-announce] 20210831 [SECURITY] [DLA 2752-1] squashfs-tools security update",
            "tags": [
              "mailing-list",
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            "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00030.html"
          },
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            "tags": [
              "vendor-advisory",
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          },
          {
            "name": "FEDORA-2021-9fb6da134f",
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              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSMRKVJMJFX3MB7D3PXJSYY3TLZROE5S/"
          },
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    ],
    "cna": {
      "affected": [
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          "vendor": "n/a",
          "versions": [
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        }
      ],
      "descriptions": [
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          "value": "squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination."
        }
      ],
      "problemTypes": [
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            }
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      "providerMetadata": {
        "dateUpdated": "2023-05-30T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
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          "tags": [
            "vendor-advisory"
          ],
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        },
        {
          "name": "[debian-lts-announce] 20210831 [SECURITY] [DLA 2752-1] squashfs-tools security update",
          "tags": [
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          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00030.html"
        },
        {
          "name": "DSA-4967",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4967"
        },
        {
          "name": "FEDORA-2021-9fb6da134f",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSMRKVJMJFX3MB7D3PXJSYY3TLZROE5S/"
        },
        {
          "name": "GLSA-202305-29",
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    "datePublished": "2021-08-27T00:00:00.000Z",
    "dateReserved": "2021-08-27T00:00:00.000Z",
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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.

Vulnerability timeline

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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.
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