cnvd-2021-52407
Vulnerability from cnvd

Title: SELinux资源管理错误漏洞

Description:

SELinux是美国国家安全局(National Security Agency)的一种采用安全架构的Linux子系统,它能够让管理员更好地管控哪些人可以访问系统。

SELinux 3.2版本存在安全漏洞,该漏洞源于SELinux的CIL编译器在\"CIL reset classperms\"中有一个use-after-free。目前没有详细的漏洞细节提供。

Severity:

Patch Name: SELinux资源管理错误漏洞的补丁

Patch Description:

SELinux是美国国家安全局(National Security Agency)的一种采用安全架构的Linux子系统,它能够让管理员更好地管控哪些人可以访问系统。

SELinux 3.2版本存在安全漏洞,该漏洞源于SELinux的CIL编译器在\"CIL reset classperms\"中有一个use-after-free。目前没有详细的漏洞细节提供。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://oss-fuzz.com/revisions?job=libfuzzer_asan_selinux&range=202104191800:202104200000。

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-36086

Impacted products
Name
National Security Agency SELinux 3.2
Show details on source website


{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-36086"
    }
  },
  "description": "SELinux\u662f\u7f8e\u56fd\u56fd\u5bb6\u5b89\u5168\u5c40\uff08National Security Agency\uff09\u7684\u4e00\u79cd\u91c7\u7528\u5b89\u5168\u67b6\u6784\u7684Linux\u5b50\u7cfb\u7edf\uff0c\u5b83\u80fd\u591f\u8ba9\u7ba1\u7406\u5458\u66f4\u597d\u5730\u7ba1\u63a7\u54ea\u4e9b\u4eba\u53ef\u4ee5\u8bbf\u95ee\u7cfb\u7edf\u3002\n\nSELinux 3.2\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eSELinux\u7684CIL\u7f16\u8bd1\u5668\u5728\\\"CIL reset classperms\\\"\u4e2d\u6709\u4e00\u4e2ause-after-free\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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://oss-fuzz.com/revisions?job=libfuzzer_asan_selinux\u0026range=202104191800:202104200000\u3002",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-52407",
  "openTime": "2021-07-20",
  "patchDescription": "SELinux\u662f\u7f8e\u56fd\u56fd\u5bb6\u5b89\u5168\u5c40\uff08National Security Agency\uff09\u7684\u4e00\u79cd\u91c7\u7528\u5b89\u5168\u67b6\u6784\u7684Linux\u5b50\u7cfb\u7edf\uff0c\u5b83\u80fd\u591f\u8ba9\u7ba1\u7406\u5458\u66f4\u597d\u5730\u7ba1\u63a7\u54ea\u4e9b\u4eba\u53ef\u4ee5\u8bbf\u95ee\u7cfb\u7edf\u3002\r\n\r\nSELinux 3.2\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eSELinux\u7684CIL\u7f16\u8bd1\u5668\u5728\\\"CIL reset classperms\\\"\u4e2d\u6709\u4e00\u4e2ause-after-free\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "SELinux\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "National Security Agency SELinux 3.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-36086",
  "serverity": "\u4f4e",
  "submitTime": "2021-07-02",
  "title": "SELinux\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}


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