cnvd-2021-67506
Vulnerability from cnvd
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:
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。 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:
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 |
|---|
{
"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"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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