cnvd-2021-05132
Vulnerability from cnvd
Title: Linux kernel路径遍历漏洞（CNVD-2021-05132）
Description:
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel 5.10.7之前版本存在安全漏洞，该漏洞源于drivers/target/target_core_xcopy.c标识符检查不足，攻击者可利用该漏洞通过XCOPY请求中的目录遍历来读写文件。
Severity: 中
Patch Name: Linux kernel路径遍历漏洞（CNVD-2021-05132）的补丁
Patch Description:
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel 5.10.7之前版本存在安全漏洞，该漏洞源于drivers/target/target_core_xcopy.c标识符检查不足，攻击者可利用该漏洞通过XCOPY请求中的目录遍历来读写文件。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/torvalds/linux/commit/2896c93811e39d63a4d9b63ccf12a8fbc226e5e4
Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-28374
Impacted products
| Name | Linux Linux kernel <5.10.7 |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2020-28374",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-28374"
}
},
"description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 5.10.7\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8edrivers/target/target_core_xcopy.c\u6807\u8bc6\u7b26\u68c0\u67e5\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7XCOPY\u8bf7\u6c42\u4e2d\u7684\u76ee\u5f55\u904d\u5386\u6765\u8bfb\u5199\u6587\u4ef6\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\uff1ahttps://github.com/torvalds/linux/commit/2896c93811e39d63a4d9b63ccf12a8fbc226e5e4",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2021-05132",
"openTime": "2021-01-22",
"patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 5.10.7\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8edrivers/target/target_core_xcopy.c\u6807\u8bc6\u7b26\u68c0\u67e5\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7XCOPY\u8bf7\u6c42\u4e2d\u7684\u76ee\u5f55\u904d\u5386\u6765\u8bfb\u5199\u6587\u4ef6\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": "Linux kernel\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2021-05132\uff09\u7684\u8865\u4e01",
"products": {
"product": "Linux Linux kernel \u003c5.10.7"
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-28374",
"serverity": "\u4e2d",
"submitTime": "2021-01-18",
"title": "Linux kernel\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2021-05132\uff09"
}
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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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